Iklan

Iklan

Pertanyaan

Sebuah bujur sangkar ABCD dengan rusuk 20 cm seperti gambar. Hitung besar kuat medan listrik di titik D jika q A = q C = + 4 μ C dan q B = - ....

Sebuah bujur sangkar ABCD dengan rusuk 20 cm seperti gambar.

Hitung besar kuat medan listrik di titik D jika qA = qC = + dan qB = -4 space μC ....

Iklan

N. Puspita

Master Teacher

Jawaban terverifikasi

Jawaban

kuat medan listrik di titik D adalah

kuat medan listrik di titik D adalah 5 comma 82 square root of 2 cross times 10 to the power of 5 space straight N divided by straight C

Iklan

Pembahasan

Pembahasan
lock

Diketahui Ditanya : Penyelesaian: Langkah pertama, gambarkan arah medan listrik di titik D akibat masing-masing muatan yang terletak di titik A, B, dan C. Hitung besar medan listrik E A ,E B , dan E C Menghitung medan listrik di titik D akibat muatan A ( E A ): Menghitung medan listrik di titik D akibat muatan C ( E C ): Menghitung medan listrik di titik D akibat muatan B( E B ): terlebih dahulu menghitung r BD 2 Sehingga, Selanjutnya, menghitung resultan medan listrik di titik D dengan menggunakan metode penguraian vektor, yaitu: Kemudian menghitung E Bx dan E By Selanjutnya menghitung resultan vektor medan listrik pada arah sumbu-x dan sumbu-y: Setelah itu menghitung resultan medan listrik total di titik D, yaitu: Jadi, kuat medan listrik di titik D adalah

Diketahui

s equals 20 space cm equals 0 comma 2 space straight m q subscript A equals q subscript C equals plus 4 space μC equals plus 4 cross times 10 to the power of 6 space straight C q subscript B equals negative 4 space μC equals negative 4 cross times 10 to the power of 6 space straight C

Ditanya :

E subscript D equals... ?

Penyelesaian:

Langkah pertama, gambarkan arah medan listrik di titik D akibat masing-masing muatan yang terletak di titik A, B, dan C. 

Hitung besar medan listrik EA, EB, dan EC

Menghitung medan listrik di titik D akibat muatan A (EA):

E subscript A equals k times q subscript A over r subscript A D end subscript squared E subscript A equals 9 cross times 10 to the power of 9 times fraction numerator 4 cross times 10 to the power of negative 6 end exponent over denominator 0 comma 2 squared end fraction E subscript A equals fraction numerator 36 cross times 10 cubed over denominator 0 comma 04 end fraction E subscript A equals 900 cross times 10 cubed E subscript A equals 9 cross times 10 squared cross times 10 cubed E subscript A equals 9 cross times 10 to the power of 5 space straight N divided by straight C 

Menghitung medan listrik di titik D akibat muatan C (EC):

table attributes columnalign right center left columnspacing 0px end attributes row cell E subscript C end cell equals cell k times q subscript C over r subscript C D end subscript squared end cell row cell E subscript C end cell equals cell 9 cross times 10 to the power of 9 times fraction numerator 4 cross times 10 to the power of negative 6 end exponent over denominator 0 comma 2 squared end fraction end cell row cell E subscript C end cell equals cell fraction numerator 36 cross times 10 cubed over denominator 0 comma 04 end fraction end cell row cell E subscript C end cell equals cell 900 cross times 10 cubed end cell row cell E subscript C end cell equals cell 9 cross times 10 squared cross times 10 cubed end cell row cell E subscript C end cell equals cell 9 cross times 10 to the power of 5 space straight N divided by straight C end cell end table 

Menghitung medan listrik di titik D akibat muatan B (EB):

E subscript B equals k times q subscript B over r subscript B D end subscript squared

terlebih dahulu menghitung rBD2

r subscript B D end subscript squared equals s squared plus s squared r subscript B D end subscript squared equals 2 times s squared r subscript B D end subscript squared equals 2 times 0 comma 2 squared r subscript B D end subscript squared equals 2 times 0 comma 04 r subscript B D end subscript squared equals 0 comma 08 

Sehingga, 

table attributes columnalign right center left columnspacing 0px end attributes row cell E subscript B end cell equals cell k times q subscript B over r subscript B D end subscript squared end cell row cell E subscript B end cell equals cell 9 cross times 10 to the power of 9 times fraction numerator 4 cross times 10 to the power of negative 6 end exponent over denominator 0 comma 08 end fraction end cell row cell E subscript B end cell equals cell fraction numerator 36 cross times 10 cubed over denominator 0 comma 08 end fraction end cell row cell E subscript B end cell equals cell 450 cross times 10 cubed end cell row cell E subscript B end cell equals cell 4 comma 50 cross times 10 squared cross times 10 cubed end cell row cell E subscript B end cell equals cell 4 comma 50 cross times 10 to the power of 5 space straight N divided by straight C end cell end table 

Selanjutnya, menghitung resultan medan listrik di titik D dengan menggunakan metode penguraian vektor, yaitu:

Kemudian menghitung EBx dan EBy 

table attributes columnalign right center left columnspacing 0px end attributes row cell E subscript B x end subscript over E subscript B end cell equals cell fraction numerator s over denominator s square root of 2 end fraction end cell row cell fraction numerator E subscript B x end subscript over denominator 4 comma 5 cross times 10 to the power of 5 end fraction end cell equals cell fraction numerator 1 over denominator square root of 2 end fraction end cell row cell E subscript B x end subscript end cell equals cell fraction numerator 4 comma 5 cross times 10 to the power of 5 over denominator square root of 2 end fraction end cell row cell E subscript B x end subscript end cell equals cell fraction numerator 4 comma 5 cross times 10 to the power of 5 over denominator 1 comma 414 end fraction end cell row cell E subscript B x end subscript end cell equals cell 3 comma 18 cross times 10 to the power of 5 space straight N divided by straight C end cell end table 

E subscript B y end subscript equals E subscript B x end subscript equals 3 comma 18 cross times 10 to the power of 5 space straight N divided by straight C

Selanjutnya menghitung resultan vektor medan listrik pada arah sumbu-x dan sumbu-y:

capital sigma E subscript x equals E subscript B x end subscript minus E subscript C capital sigma E subscript x equals 3 comma 18 cross times 10 to the power of 5 minus 9 cross times 10 to the power of 5 capital sigma E subscript x equals negative 5 comma 82 cross times 10 to the power of 5 space straight N divided by straight C  capital sigma E subscript y equals E subscript A minus E subscript B y end subscript capital sigma E subscript x equals 9 cross times 10 to the power of 5 minus 3 comma 18 cross times 10 to the power of 5 capital sigma E subscript x equals 5 comma 82 cross times 10 to the power of 5 space straight N divided by straight C

Setelah itu menghitung resultan medan listrik total di titik D, yaitu:

E subscript D equals square root of open parentheses capital sigma E subscript x close parentheses squared plus open parentheses capital sigma E subscript y close parentheses squared end root E subscript D equals square root of open parentheses negative 5 comma 82 cross times 10 to the power of 5 close parentheses squared plus open parentheses 5 comma 82 cross times 10 to the power of 5 close parentheses squared end root E subscript D equals square root of open parentheses 5 comma 82 cross times 10 to the power of 5 close parentheses squared plus open parentheses 5 comma 82 cross times 10 to the power of 5 close parentheses squared end root E subscript D equals square root of 2 times open parentheses 5 comma 82 cross times 10 to the power of 5 close parentheses squared end root E subscript D equals 5 comma 82 cross times 10 to the power of 5 square root of 2 E subscript D equals 5 comma 82 square root of 2 cross times 10 to the power of 5 space straight N divided by straight C 

Jadi, kuat medan listrik di titik D adalah 5 comma 82 square root of 2 cross times 10 to the power of 5 space straight N divided by straight C

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

15

elysa margaretha

Pembahasan lengkap banget Mudah dimengerti Bantu banget Makasih ❤️

Iklan

Iklan

Pertanyaan serupa

Dua muatan listrik muatannya 0,2 µC diletakkan titik B dan C sebuah segitiga sama kaki. Jika k = 9 × 1 0 0 N . m 2 . C − 2 ,maka resultan kuat medan listrik di titik A adalah ….

63

4.8

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