Roboguru

Perhatikan gambar di samping! Kuat medan listrik pada titik C sebesar ....

Pertanyaan

Perhatikan gambar di samping!

Kuat medan listrik pada titik C sebesar .... open parentheses k equals 10 to the power of 9 space N m squared C to the power of negative 2 end exponent close parentheses

  1. 5 comma 0 space x space 10 to the power of 9 space N C to the power of negative 1 end exponent

  2. 2 comma 3 space x space 10 to the power of 10 space N C to the power of negative 1 end exponent

  3. 2 comma 7 space x space 10 to the power of 10 space N C to the power of negative 1 end exponent

  4. 3 comma 1 space x space 10 to the power of 10 space N C to the power of negative 1 end exponent

  5. 4 comma 0 space x space 10 to the power of 10 space N C to the power of negative 1 end exponent

Pembahasan Soal:

Terlebih dahulu cari kuat medan listrik A dan B : 

Kuat medan listrik A yang dirasakan oleh titik C :

E subscript A C end subscript equals k q subscript A over R subscript A C end subscript squared  E subscript A C end subscript equals open parentheses 9 x 10 to the power of 9 close parentheses fraction numerator open parentheses 4 close parentheses over denominator open parentheses 3 close parentheses squared end fraction  E subscript A C end subscript equals 4 x 10 to the power of 9 space N divided by C

Kuat medan listrik B yang dirasakan oleh titik C :

E subscript B C end subscript equals k q subscript B over R subscript B C end subscript squared  E subscript B C end subscript equals open parentheses 9 x 10 to the power of 9 close parentheses fraction numerator open parentheses 3 close parentheses over denominator open parentheses 1 close parentheses squared end fraction  E subscript B C end subscript equals 27 x 10 to the power of 9 space N divided by C

Maka, kuat medan listrik total yang dirasakan oleh titik C adalah :

E subscript C equals E subscript B C end subscript plus E subscript A C end subscript  E subscript C equals left parenthesis 27 plus 4 right parenthesis space x space 10 to the power of 9 space N divided by C  E subscript C equals 31 x 10 to the power of 9 space N divided by C  E subscript C equals 3 comma 1 x 10 to the power of 10 space N divided by C

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 20 Desember 2020

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