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Dua muatan  listrik terpisah seperti pada gambar. Kuat medanpada titik P adalah .... begin mathsize 12px style left parenthesis straight k equals 9 cross times 10 to the power of 9 space Nm squared straight C to the power of negative 2 end exponent right parenthesis end style

  1. begin mathsize 14px style 9 comma 0 cross times 10 to the power of 9 space straight N. straight C to the power of negative 1 end exponent end style

  2. Error converting from MathML to accessible text.

  3. Error converting from MathML to accessible text.

  4. Error converting from MathML to accessible text.

  5. Error converting from MathML to accessible text.

R. Maiza

Master Teacher

Mahasiswa/Alumni Institut Teknologi Bandung

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Pembahasan

begin mathsize 14px style straight q subscript straight A equals 2 comma 5 space straight C  straight q subscript straight B equals negative 2 space straight C  straight r subscript straight A minus straight P end subscript equals 3 space straight m plus 2 space straight m equals 5 space straight m  straight r subscript straight B minus straight P end subscript equals 2 space cm  straight E subscript straight P space ?  end style

Kuat medan listrik A yang dirasakan oleh P adalah :

begin mathsize 14px style straight E subscript straight A equals straight k fraction numerator straight q subscript straight A over denominator straight r subscript straight A minus straight P end subscript superscript 2 end fraction equals left parenthesis 9 cross times 10 to the power of 9 right parenthesis fraction numerator 2 comma 5 over denominator 5 squared end fraction  straight E subscript straight A equals 9 cross times 10 to the power of 8 space straight N divided by straight C    end style

Kuat medan listrik B yang dirasakan oleh P adalah :

begin mathsize 14px style straight E subscript straight B equals straight k fraction numerator straight q subscript straight B over denominator straight r subscript straight B minus straight P end subscript superscript 2 end fraction equals left parenthesis 9 cross times 10 to the power of 9 right parenthesis 2 over 2 squared  straight E subscript straight B equals 45 cross times 10 to the power of 8 space straight N divided by straight C    end style

Maka, kuat medan listrik total yang dirasakan oleh P adalah :

begin mathsize 14px style straight E subscript straight P equals straight E subscript straight B minus straight E subscript straight A  straight E subscript straight P equals left parenthesis 45 minus 9 right parenthesis cross times 10 to the power of 8  straight E subscript straight P equals 36 cross times 10 to the power of 8  straight E subscript straight P equals 3 comma 6 cross times 10 to the power of 9 space straight N divided by straight C end style

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