Tokoh - tokoh Fisika Klasik ( diambil dari http:/www.gurumuda.com )

Galileo Galilei dilahirkan di Pisa, Tuscany, Italia, pada tanggal 15 Februari 1564. Sebagai seorang matematikawan, ayahnya berharap Galileo menjadi seorang dokter gaji dokter sangat besar dibandingkan dengan matematikawan. Mengikuti kehendak ayahnya, Galileo masuk jurusan kedokteran, Universitas Pisa. Karena merasa bosan dengan ilmu kedokteran, Galileo mempelajari matematika pada seorang guru di istana Tuscana, yakni Ostillo Ricci. Ketika berusia 21 tahun, Galileo berhenti kuliah karena kekurangan biaya. Ketika keluar, ia ditawarkan untuk mengajar matematika pada Universitas Pisa. Selanjutnya, Galileo pindah ke Universitas Padua tahun 1592 untuk mengajar astronomi, geometri dan mekanika sampai tahun 1960. pada massa ini ia menghasilkan beberapa penemuan penting.

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Joseph John Thomson

• Tuesday Aug 12,2008 12:03 PM
• By san
• In Tokoh Fisika Klasik

Joseph John Thomson (1856-1940) ialah seorang ilmuwan yang lahir di Cheetham Hill, di mana ia diangkat sebagai profesor fisika eksperimental sejak 1884. Penelitiannya membuahkan penemuan elektron. Thomson mengetahui bahwa gas mampu menghantar listrik. Ia menjadi perintis ilmu fisika nuklir. Thomson memenangkan Hadiah Nobel Fisika 1906.

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Alfred Nobel

• Friday Aug 8,2008 10:44 AM
• By san
• In Tokoh Fisika Klasik

Alfred Nobel dilahirkan pada tanggal 21 oktober 1883, di Stockholm, Swedia. Alfred dan kedua saudaranya, Robert, Ludvig dan Emil memperoleh pendidikan dari guru privat. Pengetahuan yang diajarkan meliputi ilmu alam, bahasa dan sastra. Pada usia 17 tahun, Alfred telah menguasai bahasa Swedia, Rusia, Perancis, Inggris dan Jerman. Alfred sangat tertarik di bidang bahasa, kimia dan fisika. Alfred akhirnya dikirimkan oleh ayahnya ke luar negeri untuk belajar kimia dan menjadi insinyur kimia. Di Paris, Alfred bekerja di laboratorium pribadi kimiawan terkenal, profesor TJ Pelouze. Di sana ia berkenalan dengan kimiawan Italia, Ascanio Sobrero. Alfred sangat tertarik dengan nitrogliserin, cairan berdaya ledak tinggi yang ditemukan oleh Sobrero, yang dianggapnya bermanfaat dalam pembangunan.

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Michael Faraday

• Friday Aug 8,2008 10:40 AM
• By san
• In Tokoh Fisika Klasik

Faraday dilahirkan pada tanggal 22 september 1791 di Newington, Surrey, dekat London. Faraday berasal dari keluarga miskin dan ia hanya mengenyam sedikit pendidikan. Hal ini tidak membuatnya minder dan patah semangat. Ketika Faraday berusia 14 tahun, ia bekerja di sebuah perusahan penjilidan buku dan menjadi penjilid dan penjual buku. Kesempatan ini dimanfaatkan oleh Faraday untuk membaca banyak buku dan sejak saat itu ia mulai tertarik dengan ilmu fisika dan kimia.

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Christiaan Huygens

• Thursday Aug 7,2008 12:49 PM
• By san
• In Tokoh Fisika Klasik

Lahir yang di Denhag, Belanda, pada 14 April 1629, Christiaan Huygens adalah putra Constantijn Huygens. Ia merupakan ahli matematika dan fisika dan dikaitkan dengan Revolusi Sains. Christiaan dikenal untuk perannya dalam pengembangan kalkulus modern dan argumennya yang terkenal mengenai sinar yang terdiri atas gelombang-gelombang.

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Methods of Liquid Waste Treatment

Sewage Treatment

A high BOD indicates the prescence of excess amounts of organic carbon. Oxygen depletion is a consequence of adding wastes with high BOD values to aquatic ecosystems. The higher the BOD of a source of wastes the higher the polluting power of that waste. BOD's of certain wastes are listed in the table below.

Type of Waste	BOD(mg/L)
Domestic Sewage	200-600
Slaughterhouse Wastes	1000-4000
Cattle Shed Effluents	20000
Vegetable Processing	200-5000

There are numerous ways to reduce the BOD of waste before discharging it into the water. Treatment of the wastes is aimed at removing organic material, human pathogens, and toxic chemicals.

Primary sewage treatment involves physical seperation to lower the BOD of the waste. Suspended solids are removed in this step through the use of settling tanks. Primary treatment usually removes from 30% to 40% of the BOD from typical domestic sewage. Secondary treatment uses microbial degradation to reduce the concentration of organic compounds furthur; it involves microbial processes which can be aerobic or anaerobic. The combined use of primary and secondary treatment reduces approximately 80% to 90% of the BOD. However, because secondary treatment involves microorganisms it is extremely sensitive to toxic chemicals. Finally, tertiary treatment uses chemicals to remove inorganic compounds and pathogens.

Oxidation Ponds

Oxidation Ponds are also known as stabilization ponds or lagoons. They are used for simple secondary treatment of sewage effluents. Within an oxidation pond heterotrophic bacteria degrade organic matter in the sewage which results in production of cellular material and minerals. The production of these supports the growth of algae in the oxidation pond. Growth of algal populations allows furthur decomposition of the organic matter by producing oxygen. The production of this oxygen replenishes the oxygen used by the heterotrophic bacteria. Typically oxidation ponds need to be less than 10 feet deep in order to support the algal growth. In addition, the use of oxidation ponds is largely restricted to warmer climate regions because they are strongly influenced by seasonal temperature changes. Oxidation ponds also tend to fill, due to the settling of the bacterial and algal cells formed during the decomposition of the sewage. Overall, oxidation ponds tend to be inefficient and require large holding capacities and long retention times. The degradation is relatively slow and the effluents containing the oxidized products need to be periodically removed from the ponds. An oxidation pond can be seen in the figure below.

Oxidation Pond

Trickling Filter

The trickling filter system is relatively simple and inexpensive. It is an aerobic sewage treatment method in which the sewage is distributed by a revolving sprinkler suspended over a bed of porous material as seen in the Figure below.

Trickling Filter

The sewage slowly moves through the porous bed and the effluent is collected at the bottom. This porous material becomes coated with a dense slimy bacterial growth which provides a home for a heterogeneous microbial community which includes bacteria, fungi, and protozoa as well as other organisms. As the sewage drains through the porous bed, this microbial community absorbs and breaks down dissolved organic nutrients in the sewage; this reduces the BOD. Aeration of the sewage occurs by the movement of air through the porous bed. The sewage may need to be recirculated several times through the filter in order to reduce the BOD sufficiently. One dissadvantage to this system is that an excess amount of nutrients produces an excessive amount of slime on the bed which in turn reduces aeration, leading to the need to renew the porous bed. Cold winter temperatures also reduce the effectiveness of this method in outdoor treatment facilities.

Activated Sludge

Activated Sludge is a widely used aerobic method of sewage treatment. After primary settling, the waste stream is brought to an aeration tank. Air is put in and/or there is mechanical stirring which provides aeration of the waste. Sludge from a previous run is usually reintroduced to the tanks to provide microorganisms. This is why it is called activated sludge. During the period in the aeration tank, large developments of heterotrophic organisms occur. In the activated sludge tank the bacteria occur in free suspension and as aggregates or flocs. Extensive microbial metabolism of organic compunds in the sewage results in the production of new microbial biomass. Most of this biomass becomes associated with flocs that can be removed from suspension by settling. A portion of the settled sewage sludge is recycled and the remainder must be treated by composting or anaerobic digestion. Combined with primary settling, activated sludge reduces the BOD by 85% to 90%. It also drastically reduces the number of intestinal pathogens. An illustration of an aeration basin is shown below.

Aeration Basin

Anaerobic Digestors

Anaerobic digestors are large fermentation tanks which are continuously operated under anaerobic conditions, as seen below.

Anaerobic Sludge Digestor

Anaerobic decomposition could be used for direct treatment of sewage, but it is economically favorable to treat the waste aerobically. Large-scale anaerobic digestors are usually used for processing of the sludge produced by primary and secondary treatments. It is also used for the treatment of industrial effluents which have very high BOD levels. The mechanisms for mechanical mixing, heating, gas collection, sludge addition and removal of stabilized sludge are incorporated into the design of large-scale anaerobic digestors. Anaerobic digestion uses a large variety of nonmethanogenic, obligately, or facultatively anaerobic bacteria. In the first part of the process, complex organic materials are broken down and in the next step, methane is generated. The final products of anaerobic digestion are approximately 70% methane and 30% carbon dioxide, microbial biomass and a nonbiodegradable residue.

Tertiary Treatment

The treatment processes used to reduce the BOD of sewage waste are secondary treatment processes. Tertiary treatment is any practice beyond secondary treatment and is designed to remove nonbiodegradable organic pollutants and mineral nutrients such as nitrogen and phosphorus salts. For tertiary treatment, activated carbon filters are commonly used.

Disinfection

Disinfection is the final step in the sewage treatment process and is designed to kill enteropathogenic bacteria and viruses that were not eliminated during the previous stages of treatment. Disinfection is commonly done by chlorination with chlorine gas or hypochlorite. Chlorine gas reacts with water to yield hypochlorous and hydrochloric acids which are the actual disinfectants. A disadvantage of using chlorination for disinfection is the formation of disinfection by-products, such as chlorinated hydrocarbons. Chlorinated hydrocarbons are toxic and difficult to mineralize. Trihalomethanes may also be formed such as chloroform and bromoform, which are suspected carcinogens. Ozonation is an alternative to chlorination, which uses ozone as the oxidant. This however, is more expensive. Currently, alternative disinfection processes are being sought.

Back

Reference: Principles of Microbiology, R.M. Atlas, Mosby-Year, 1995

Created by Gianna Aiezza and Meredith Streeter

Data NUPTK SMKN 9 Ska

DAFTAR NUPTK SMKN 9 Surakarta
INSTANSI_INDUK	NAMA	ST_VERSION	PEG_NUPTK	PEG_NUPTK_KETERANGAN
SMK N 9 SKA	A. LAMANI	2=DITERIMA	6533734637200002
SMK N 9 SKA	ABRI MARTONO	2=DITERIMA	7651746648200002
SMK N 9 SKA	ADE ARIYONO	2=DITERIMA	4958753655200002
SMK N 9 SKA	AGUNG PRASETYO	2=DITERIMA	6261744646200003
SMK N 9 SKA	AGUS SASMITO	2=DITERIMA	0135736638200013
SMK N 9 SKA	A AGUNG JUWANA BN	2=DITERIMA	3162744646200003
SMK N 9 SKA	ANANG SYARONI	2=DITERIMA	5739733635200002
SMK N 9 SKA	ANIK SURDIYANI	2=DITERIMA	7937740641300012
SMK N 9 SKA	ARI BUDININGSIH	2=DITERIMA	1154743645300003
SMK N 9 SKA	ARI WINARSIH	2=DITERIMA	6557737639300022
SMK N 9 SKA	ATIEK RACHMAWATI	2=DITERIMA	3360758659300053
SMK N 9 SKA	BAMBANG KUSNENDAR	2=DITERIMA	8344737639200003
SMK N 9 SKA	BUDI SUSANTO	2=DITERIMA	6634745647200012
SMK N 9 SKA	BUDI SUTRISNO	2=DITERIMA	2838743643200002
SMK N 9 SKA	DALUT HERI PRASETYOKO	2=DITERIMA	9848741643200042
SMK N 9 SKA	DANANG SUPRIYANTO	2=DITERIMA	5537759661200003
SMK N 9 SKA	DARYANA	2=DITERIMA	2536742643200012
SMK N 9 SKA	DEWI CAHYUNINGDARI	5=DITOLAK		Double Counting - Sudah ada NUPTK : 0953757658300012 di SMA PRAWIRA MARTA KARTASURA
SMK N 9 SKA	DJOEMADI	2=DITERIMA	5140748652200003
SMK N 9 SKA	DWI EKO PURWANTO	2=DITERIMA	3355747651200003
SMK N 9 SKA	DWI SISWANTO	2=DITERIMA	6437742644200062
SMK N 9 SKA	DWI SUSENO	2=DITERIMA	0539743646200013
SMK N 9 SKA	DYAH PURWANI	2=DITERIMA	6954760662300052
SMK N 9 SKA	ENI DWI ASTUTI	5=DITOLAK		Double Counting - Sudah ada NUPTK : 2650756656300002 di SMK KRIYA SAHID
SMK N 9 SKA	GUNAWAN SUDARMAJI	2=DITERIMA	6441742646200003
SMK N 9 SKA	HANUNG ROSIFAH	2=DITERIMA	7738745647300012
SMK N 9 SKA	HARJITA TUR BUDIARTA	2=DITERIMA	3333747650200013
SMK N 9 SKA	HARYANI SRI MURWANI	2=DITERIMA	7559731633300003
SMK N 9 SKA	HENI WINARSIH	2=DITERIMA	3236758660300093
SMK N 9 SKA	HERI SYAIFUDIN	2=DITERIMA	6033763666200013
SMK N 9 SKA	HERU PRASTYO	2=DITERIMA	8562760662200023
SMK N 9 SKA	HUDIANARTO	2=DITERIMA	0436732636200012
SMK N 9 SKA	INDRIYANI DEWI	2=DITERIMA	1461740640300003
SMK N 9 SKA	IRIANTO	2=DITERIMA	6558740642200003
SMK N 9 SKA	ISMU	2=DITERIMA	4557743646200002
SMK N 9 SKA	JAKA PRAMANA	2=DITERIMA	1547744645200003
SMK N 9 SKA	JAREK WARSITO	2=DITERIMA	4458738640200002
SMK N 9 SKA	JOKO AGUS PAMBUDI	2=DITERIMA	3153744646200003
SMK N 9 SKA	JOKO MULATO	2=DITERIMA	7652753655200002
SMK N 9 SKA	JOKO SUYATNO	2=DITERIMA	6750745648200002
SMK N 9 SKA	JULIANI WIDAJANTI S	2=DITERIMA	1055748649200013
SMK N 9 SKA	KRISTIYANTO	2=DITERIMA	2539747652200002
SMK N 9 SKA	MARGIYONO	2=DITERIMA	9341740641200003
SMK N 9 SKA	MARNO	2=DITERIMA	8849737639200002
SMK N 9 SKA	MUNAJAT MAMAN SURYAMAN	2=DITERIMA	7433747649200003
SMK N 9 SKA	MURNI SUPATMI	2=DITERIMA	9736754655300002
SMK N 9 SKA	MURYATI	2=DITERIMA	1333759660300083
SMK N 9 SKA	NGATIMIN	2=DITERIMA	1036743647200013
SMK N 9 SKA	NUNIK NULADANI	2=DITERIMA	3335749651300063
SMK N 9 SKA	NUR SETYO PUSPITO	2=DITERIMA	5356757659200003
SMK N 9 SKA	NURYADI	2=DITERIMA	0947757659200012
SMK N 9 SKA	PARDI	2=DITERIMA	2646743646200012
SMK N 9 SKA	PARYATNO	2=DITERIMA	4734745648200012
SMK N 9 SKA	PRIYO HANDOKO	2=DITERIMA	7260745647200003
SMK N 9 SKA	PUJI HASTUTININGSIH	2=DITERIMA	0340755657300013
SMK N 9 SKA	PURWANTO	2=DITERIMA	5563741643200103
SMK N 9 SKA	RACHEL ENDANG KRISTANTI	2=DITERIMA	7859746649300002
SMK N 9 SKA	RAHARJA SIGIT MULYADI	2=DITERIMA	2040744646200013
SMK N 9 SKA	RITA MEI WULANDARI	2=DITERIMA	3849745646300002
SMK N 9 SKA	RIVI RUMIANTO	2=DITERIMA	5455744646200003
SMK N 9 SKA	RIYANTO HADI	2=DITERIMA	6652742643200032
SMK N 9 SKA	ROMDHONIEK	2=DITERIMA	1053730633200003
SMK N 9 SKA	SANTOSO	2=DITERIMA	5559745649200012
SMK N 9 SKA	SARAH DAHLIA	2=DITERIMA	1244743644300013
SMK N 9 SKA	SARDI	2=DITERIMA	4847745647200022
SMK N 9 SKA	SIKIS	2=DITERIMA	2638726627200002
SMK N 9 SKA	SITI UMARWATI	2=DITERIMA	4751736638300002
SMK N 9 SKA	SRI ASTUTIK	2=DITERIMA	7135747649300013
SMK N 9 SKA	SRI NURCAYO	2=DITERIMA	3436736637200002
SMK N 9 SKA	SRI RAHAYU	2=DITERIMA	9936738639300002
SMK N 9 SKA	SRI SULASTRI	2=DITERIMA	7962736638300002
SMK N 9 SKA	SUDARSO	2=DITERIMA	8049725627200033
SMK N 9 SKA	SUDARTO	2=DITERIMA	4939730631200002
SMK N 9 SKA	SUDARTO	2=DITERIMA	0837742643200072
SMK N 9 SKA	SUGENG	2=DITERIMA	8738744646200002
SMK N 9 SKA	SUGENG MULYANTO	2=DITERIMA	3538754656200002
SMK N 9 SKA	SUGENG WIYONO	2=DITERIMA	8949741642200002
SMK N 9 SKA	SUKASNO	2=DITERIMA	7641747650200002
SMK N 9 SKA	SULARNO	2=DITERIMA	5538741643200002
SMK N 9 SKA	SULISTYO BUDIWAHYONO	2=DITERIMA	4734741643200012
SMK N 9 SKA	SUMARDI	2=DITERIMA	1853743643200002
SMK N 9 SKA	SUPARNO	2=DITERIMA	5544732634200002
SMK N 9 SKA	SUPONO	2=DITERIMA	5335740641200003
SMK N 9 SKA	SURATNO	2=DITERIMA	5353745647200003
SMK N 9 SKA	SUROTO	2=DITERIMA	8736747649200012
SMK N 9 SKA	SUSILOWATI	2=DITERIMA	7256746648300053
SMK N 9 SKA	SUTRISNO	2=DITERIMA	5455747651200003
SMK N 9 SKA	SUWARTO YASMIN	2=DITERIMA	6554741644200003
SMK N 9 SKA	TEGUH KARDITO	2=DITERIMA	1753756661200002
SMK N 9 SKA	TIES SETYANINGSIH	2=DITERIMA	9856744646300002
SMK N 9 SKA	TITIK SUHANDAJATININGSIH	2=DITERIMA	1549745648300073
SMK N 9 SKA	TOTO BUDAYANTO	2=DITERIMA	2245750652300073
SMK N 9 SKA	TUGIYATNO	2=DITERIMA	2035744646200013
SMK N 9 SKA	TURMUDZI	2=DITERIMA	7347737639200003
SMK N 9 SKA	WAHYONO	2=DITERIMA	9547762665200002
SMK N 9 SKA	WAHYU NUR AINI	2=DITERIMA	2751754656300002
SMK N 9 SKA	WIJAYANTI SIH ANDAYANI	2=DITERIMA	2650741643300012
SMK N 9 SKA	WIRANTO	2=DITERIMA	5645726628200002
SMK N 9 SKA	Y. SUPARJI	2=DITERIMA	1454732634200013
SMK N 9 SKA	YEKTI WINARNI	2=DITERIMA	9959744646300012
SMK N 9 SKA	ZUMRONAH	2=DITERIMA	6340736637300023
SMA MURNI	AGUS PUJOPURWOKO	2=DITERIMA	9152733636200013
SMA MURNI	ARI WIDYANINGSIH	2=DITERIMA	0861757659300052
SMA MURNI	CHATARINA WIDOWATI	2=DITERIMA	9052751653300073
SMA MURNI	DYAH SRI BUDI HERAWATI	2=DITERIMA	9649757658300072
SMA MURNI	ENY WINARTI	2=DITERIMA	8548754656300032
SMA MURNI	HARLS EVAN R. SIAHAAN	2=DITERIMA	3252752653200013
SMA MURNI	ISKAK	2=DITERIMA	3534741643200062
SMA MURNI	ISNA MARDHIYATI DEWI	2=DITERIMA	7439751653300073
SMA MURNI	JAROT JOKO SRIMULYO	2=DITERIMA	7856735636200002
SMA MURNI	KUSTIJOWARNO	2=DITERIMA	8136748650200043
SMA MURNI	LINA MAHANANI	2=DITERIMA	4239752653300033
SMA MURNI	MARIA SRI KUSWARDANI	2=DITERIMA	8340750652300093
SMA MURNI	MUNAWAR SHODIQ	2=DITERIMA	4756753655200032
SMA MURNI	NINIK SUSPRIYATI	2=DITERIMA	7554750652300083
SMA MURNI	PARTINO	2=DITERIMA	0043742646200043
SMA MURNI	RIPNO	2=DITERIMA	3233731632200013
SMA MURNI	SATYO BUDI SANTOSO	2=DITERIMA	2634752653200032
SMA MURNI	SRI SUMARYAMTI	2=DITERIMA	1841745646300022
SMA MURNI	SUDARNO	2=DITERIMA	1946756658200042
SMA MURNI	SUGENG RIYANTO	2=DITERIMA	1535741643200063
SMA MURNI	SUKINO	2=DITERIMA	2055750654200003
SMA MURNI	SUPRAPTO	2=DITERIMA	0847738639200062
SMA MURNI	TOTO BUDAYANTO	5=DITOLAK		Double Counting -
SMA MURNI	WAWAN	2=DITERIMA	4137755655200003
SMA MURNI	YENI INDRIASTUTI	2=DITERIMA	8436755657300032

65.

NUPTK

KOTA SURAKARTA

D_03_JAWA TENGAH_KOTA SURAKARTA.XLS

Website : www.smkn9-solo.sch.id

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latihan soal Fisika

Nah ini foto anak Gue yang galak !!!

MEDAN MAGNET

Kerjakan sesuai petunjuk A !

1. UMPTN 1990.

Sebuah elektron bergerak searah dengan sumbu y positif dan masuk ke dalam

Medan magnet homogen sehingga menjalani gerak melingkar seperti pada

Gambar. Ini menunjukkan bahwa medan magnet searah dengan

2. UMPTN 1990.

Sebuah elektron bergerak dengan kecepatan v di dalam medan magnet yang

Induksi magnetnya B. Jika v ada di dalam bidang xy membentuk sudut 60 derajat

Dengan sumbu x dan B sejajar dengan sumbu y, maka lintasan elektron berbentuk

……….

a. garis lurus sejajar sumbu y

b. garis lurus sejajar sumbu x

c. lingkaran sejajar sumbu y

d. lingkaran sejajar sumbu x

e. spiral dengan sumbunya sejajar sumbu y

3. UMPTN 1990.

Dua buah partikel massanya m₁ : m₂ = 2 : 1 dan muatannya q₁ : q₂ = 2 : 1.

Kedua partikel itu bergerak melingkar dalam bidang yang tegak lurus medan

Magnetik homogen. Bila besar momentum kedua partikel itu sama, maka

Perbandingan jari-jari orbit partikel-partikel itu r₁ : r₂ adalah ……

a. 4 : 1 d. 1 : 2

b. 2 : 1 e. 1 : 4

c. 1 : 1

4. EBTANAS 1990.

Saat elektron memasuki medan magnet, electron Mendapat gaya Lorentz

yang searah dengan……

a. sumbu x positif

b. sumbu y positif

c. sumbu z positif

d. sumbu z negatif

e. sumbu y negatif

5. EBTANAS 1990.

Sebuah kumparan terdiri dari 50 lilitan berbentuk bujur sangkar dengan sisi

20 Cm berarus listrik 5 A berada dalam medan magnet homogen dari 0,2.10-2

Wb/m2 sehingga bidangnya tegak lurus terhadap garis gaya magnet. Momen

Kopel yang terjadi pada kumparan saat bidang kumparan sejajar arah medan

Magnet tersebut adalah………

a. 10 Nm

b. 1 Nm

c. 0,1 Nm

d. 0,02 Nm

e. 0,04 Nm

6. EBTANAS 1990.

Suatu penghantar lurus seperti pada gambar di Samping (penghantar terletak pada bidang gambar).Arah medan magnet induksi pada titik

P adalah……..

a. menjauhi pembaca tegaklurus bidang gambar

b. mendekati pembaca tegaklurus bidang gambar

c. ke atas sejajar dengan penghantar

d. ke kiri tegaklurus penghantar

e. ke kanan tegaklurus penghantar

7. EBTANAS 1990.

Induksi magnetik di suatu titik yang berjarak a dari kawat lurus panjang berarus

Listrik I adalah……..

a. berbanding lurus dengan I dan a

b. berbanding lurus dengan I dan berbanding terbalik dengan a

c. berbanding lurus dengan a dan berbanding terbalik dengan I

d. berbanding terbalik dengan I dan a

e. berbanding terbalik dengan kuadrat I dan kuadrat a

8. EBTANAS 1989.

Arah arus induksi dalam suatu penghantar semikonduktor sehingga menghasilkan

Medan magnet yang melawan perubahan garis gaya yang menimbulkannya.

Ungkapan ini adalah bunyi hukum………

a. Oersted c. Lorentz e. Faraday

b. Biot Savart d. Lenz

9. EBTANAS 1989.

Besarnya induksi magnetik di titik yang berjarak 2 cm dari kawat lurus yang

Panjang dan berarus listrik 30 ampere adalah………

a. 3 . 10 -4 Weber/m2 d. 6 . 10 –4 Weber/m2

b. 3 . 10 –2 Weber/m2 e. 3 . 10 –1 Weber/m2

c. 6 . 19 –3 Weber/m2

10. EBTANAS 1989.

Sebuah titik berada di dekat penghantar lurus panjang berarus listrik.Jika jarak

Titik ke penghantar dilipatduakan sedang kuat arusnya dijadikan setengah kali

Semula, maka induksi magnetik di titik tersebut menjadi……

a. ¼ kali semula d. 2 kali semula

b. ½ kali semula e. 4 kali semula

c. tetap

berikut latihan soal fisika klas xii