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Hitung potensial listrik di titik tengah garis hub...

Hitung potensial listrik di titik tengah garis hubung antara dua muatan titik begin mathsize 14px style plus 200 space μC end style dan size 14px minus size 14px 100 size 14px space size 14px μC yang terpisah 50 cm di udara.

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Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell q subscript 1 end cell equals cell 2 cross times 10 to the power of negative 4 end exponent space straight C end cell row cell q subscript 2 end cell equals cell negative 1 cross times 10 to the power of negative 4 end exponent space straight C end cell row r equals cell 0 comma 5 space straight m end cell row cell straight r subscript bevelled 1 half end subscript end cell equals cell 0 comma 25 space straight m end cell end table end style 

Ditanya: V = . . .

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row V equals cell V subscript 2 minus V subscript 1 end cell row blank equals cell k left parenthesis q subscript 2 over r subscript 2 minus q subscript 1 over r subscript 1 right parenthesis end cell row blank equals cell 9 cross times 10 to the power of 9 open parentheses fraction numerator negative 1 cross times 10 to the power of negative 4 end exponent over denominator 0 comma 25 end fraction minus fraction numerator 2 cross times 10 to the power of negative 4 end exponent over denominator 0 comma 25 end fraction close parentheses end cell row blank equals cell 9 cross times 10 to the power of 9 open parentheses fraction numerator negative 3 cross times 10 to the power of negative 4 end exponent over denominator 0 comma 25 end fraction close parentheses end cell row blank equals cell negative 108 cross times 10 to the power of 5 space straight V end cell end table end style 

Jadi, potensial listrik di titik tengah adalah begin mathsize 14px style negative 108 cross times 10 to the power of 5 space straight V end style

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