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Dua muatan titik diletakkan pada sumbu X: muatan  ...

Dua muatan titik diletakkan pada sumbu X: muatan begin mathsize 14px style 3 space μC end style di titik size 14px X size 14px equals size 14px 8 size 14px space size 14px cm dan muatan size 14px minus size 14px 5 size 14px space size 14px μC di size 14px X size 14px equals size 14px 12 size 14px space size 14px cm. Hitung potensial listrik jika muatan undefined berada di begin mathsize 14px style X equals 10 space cm end style.undefined

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell q subscript A end cell equals cell 3 cross times 10 to the power of negative 6 end exponent space straight C end cell row cell q subscript B end cell equals cell negative 5 cross times 10 to the power of negative 6 end exponent space straight C end cell row cell r subscript A end cell equals cell 0 comma 08 space straight m end cell row cell r subscript B end cell equals cell 0 comma 12 space straight m end cell end table end style 

Ditanya V jika muatan B berada di x = 10 cm = .... 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row V equals cell k q subscript B over r end cell row blank equals cell 9 cross times 10 to the power of 9 fraction numerator negative 5 cross times 10 to the power of negative 6 end exponent over denominator left parenthesis 10 minus 12 right parenthesis cross times 10 to the power of negative 2 end exponent end fraction end cell row blank equals cell 225 cross times 10 to the power of 4 space volt end cell end table end style 

Jadi, potensial listrik jika muatan undefined berada di x = 10 cm adalah begin mathsize 14px style 225 cross times 10 to the power of 4 space straight V end style

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