Iklan

Iklan

Pertanyaan

Bujur sangkar ABCD berisi 10 cm. Pada titik sudutnya terdapat muatan sebesar 9 μ C , 5 μ C , − 4 μ C , − 8 μ C , hitunglah usaha untuk memindahkan muatan sebesar − 2 mC dari titi E (tengah - tengah AB ) ke F (tengah - tengah CD )!

Bujur sangkar ABCD berisi 10 cm. Pada titik sudutnya terdapat muatan sebesar , hitunglah usaha untuk memindahkan muatan sebesar  dari titi (tengah - tengah AB) ke F (tengah - tengah CD)!

Iklan

R. Haq

Master Teacher

Jawaban terverifikasi

Jawaban

usaha untuk memindahkan muatan -2 mC dari titik E ke F sebesar

usaha untuk memindahkan muatan -2 mC dari titik E ke F sebesar Error converting from MathML to accessible text. 

Iklan

Pembahasan

Usaha listrik dapat diartikan sebagai perubahan energi potensial listrik, sehingga usaha dapat dirumuskan Menghitung potensial pada titik E Hitung panjang DE dan CD Hitung potensial di titik E Menghitung potensial pada titik F Hitung panjang AF dan BF Hitung potensial di titik F Menghitung Usaha Dengan demikian usaha untuk memindahkan muatan -2 mC dari titik E ke F sebesar

s equals 10 space cm q subscript A equals 9 space μC q subscript B equals 5 space μC q subscript C equals negative 4 space μC q subscript D equals negative 8 space μC q equals negative 2 space mC W subscript E F end subscript equals ? 

 

Usaha listrik dapat diartikan sebagai perubahan energi potensial listrik, sehingga usaha dapat dirumuskan 

table attributes columnalign right center left columnspacing 0px end attributes row cell W subscript E F end subscript end cell equals cell E p subscript F minus E p subscript E end cell row blank equals cell q V subscript F minus q V subscript E end cell row blank equals cell q open parentheses V subscript F minus V subscript E close parentheses end cell end table 

Menghitung potensial pada titik E

Hitung panjang DE dan CD

D E equals square root of A D squared plus A E squared end root D E equals square root of s squared plus open parentheses 1 half s close parentheses squared end root D E equals square root of 10 squared plus 5 squared end root D E equals 5 square root of 5 space cm equals 5 square root of 5 cross times 10 to the power of negative 2 end exponent space straight m  C D equals D E equals 5 square root of 5 cross times 10 to the power of negative 2 end exponent space straight m

Hitung potensial di titik E

table attributes columnalign right center left columnspacing 0px end attributes row cell straight V subscript straight E end cell equals cell straight V subscript EA plus straight V subscript EB plus straight V subscript EC plus straight V subscript ED end cell row blank equals cell straight k straight q subscript straight A over straight r subscript AE plus straight k straight q subscript straight B over straight r subscript BE plus straight k straight q subscript straight C over straight r subscript CE plus straight k straight q subscript straight D over straight r subscript DE end cell row blank equals cell straight k open parentheses fraction numerator straight q subscript straight A over denominator begin display style 1 half straight s end style end fraction plus fraction numerator straight q subscript straight B over denominator begin display style 1 half straight s end style end fraction plus straight q subscript straight C over CE plus straight q subscript straight D over DE close parentheses end cell row blank equals cell 9 cross times 10 to the power of 9 open parentheses fraction numerator 9 cross times 10 to the power of negative 6 end exponent over denominator begin display style 1 half cross times 0 comma 1 end style end fraction plus fraction numerator 5 cross times 10 to the power of negative 6 end exponent over denominator begin display style 1 half cross times 0 comma 1 end style end fraction plus fraction numerator open parentheses negative 4 plus-or-minus 10 to the power of negative 6 end exponent close parentheses over denominator 5 square root of 5 cross times 10 to the power of negative 2 end exponent end fraction plus fraction numerator open parentheses negative 8 cross times 10 to the power of negative 6 end exponent close parentheses over denominator 5 square root of 5 cross times 10 to the power of negative 2 end exponent end fraction close parentheses end cell row blank equals cell 9 cross times 10 to the power of 9 open parentheses fraction numerator 14 cross times 10 to the power of negative 6 end exponent over denominator 5 cross times 10 to the power of negative 2 end exponent end fraction minus fraction numerator 12 cross times 10 to the power of negative 6 end exponent over denominator 5 square root of 5 cross times 10 to the power of negative 2 end exponent end fraction close parentheses end cell row blank equals cell 9 cross times 10 to the power of 9 cross times 1 comma 73 cross times 10 to the power of negative 4 end exponent end cell row blank equals cell bold 1 bold comma bold 56 bold cross times bold 10 to the power of bold 6 bold space bold V end cell end table

Menghitung potensial pada titik F

Hitung panjang AF dan BF

AF equals square root of AD squared plus AF squared end root AF equals square root of straight s squared plus open parentheses 1 half straight s close parentheses squared end root AF equals square root of 10 squared plus 5 squared end root AF equals 5 square root of 5 space cm equals 5 square root of 5 cross times 10 to the power of negative 2 end exponent space straight m  BF equals AF equals 5 square root of 5 cross times 10 to the power of negative 2 end exponent space straight m

Hitung potensial di titik F

table attributes columnalign right center left columnspacing 0px end attributes row cell straight V subscript straight F end cell equals cell straight V subscript FA plus straight V subscript FB plus straight V subscript FC plus straight V subscript FD end cell row blank equals cell straight k straight q subscript straight A over straight r subscript AF plus straight k straight q subscript straight B over straight r subscript BF plus straight k straight q subscript straight C over straight r subscript CF plus straight k straight q subscript straight D over straight r subscript DF end cell row blank equals cell straight k open parentheses fraction numerator straight q subscript straight A over denominator begin display style AF end style end fraction plus fraction numerator straight q subscript straight B over denominator begin display style BF end style end fraction plus fraction numerator straight q subscript straight C over denominator begin display style 1 half straight s end style end fraction plus fraction numerator straight q subscript straight D over denominator begin display style 1 half straight s end style end fraction close parentheses end cell row blank equals cell 9 cross times 10 to the power of 9 open parentheses fraction numerator 9 cross times 10 to the power of negative 6 end exponent over denominator begin display style 5 square root of 5 cross times 10 to the power of negative 2 end exponent end style end fraction plus fraction numerator 5 cross times 10 to the power of negative 6 end exponent over denominator begin display style 5 square root of 5 cross times 10 to the power of negative 2 end exponent end style end fraction plus fraction numerator open parentheses negative 4 plus-or-minus 10 to the power of negative 6 end exponent close parentheses over denominator 1 half cross times 0 comma 1 end fraction plus fraction numerator open parentheses negative 8 cross times 10 to the power of negative 6 end exponent close parentheses over denominator 1 half cross times 0 comma 1 end fraction close parentheses end cell row blank equals cell 9 cross times 10 to the power of 9 open parentheses fraction numerator 14 cross times 10 to the power of negative 6 end exponent over denominator 5 square root of 5 cross times 10 to the power of negative 2 end exponent end fraction minus fraction numerator 12 cross times 10 to the power of negative 6 end exponent over denominator 5 cross times 10 to the power of negative 2 end exponent end fraction close parentheses end cell row blank equals cell 9 cross times 10 to the power of 9 cross times open parentheses negative 1 comma 15 cross times 10 to the power of negative 4 end exponent close parentheses end cell row blank equals cell bold minus bold 1 bold comma bold 035 bold cross times bold 10 to the power of bold 6 bold space bold V end cell end table

Menghitung Usaha

table attributes columnalign right center left columnspacing 0px end attributes row cell W subscript E F end subscript end cell equals cell q open parentheses V subscript F minus V subscript E close parentheses end cell row blank equals cell negative 2 cross times 10 to the power of negative 3 end exponent cross times open parentheses negative 1 comma 035 cross times 10 to the power of 6 minus 1 comma 56 cross times 10 to the power of 6 close parentheses end cell row blank equals cell negative 2 cross times 10 to the power of negative 3 end exponent cross times open parentheses negative 2 comma 595 cross times 10 to the power of 6 close parentheses end cell row blank equals cell bold 5 bold comma bold 19 bold cross times bold 10 to the power of bold 3 bold space bold J end cell end table

Dengan demikian usaha untuk memindahkan muatan -2 mC dari titik E ke F sebesar Error converting from MathML to accessible text. 

Perdalam pemahamanmu bersama Master Teacher
di sesi Live Teaching, GRATIS!

1

Iklan

Iklan

Pertanyaan serupa

Tentukan usaha untuk memindahkan muatan positif yang besarnya 10 C darisuatu titik yang potensialnya 10 volt, ke suatu titik dengan potensial 60 volt!

144

4.4

Jawaban terverifikasi

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Roboguru

Coba GRATIS Aplikasi Ruangguru

Download di Google PlayDownload di AppstoreDownload di App Gallery

Produk Ruangguru

Hubungi Kami

Ruangguru WhatsApp

+62 815-7441-0000

Email info@ruangguru.com

[email protected]

Contact 02140008000

02140008000

Ikuti Kami

©2024 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia