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CBSE Class 12-science Answered

two point charges 20*10-6 C and -4*10-6 C we separate a distance of 50 cm in air find the point of the joining the charge where the electric potential is zero
Asked by rohanchauhan2788 | 21 Jul, 2020, 05:44: PM
answered-by-expert Expert Answer
P o t e n t i a l space i s space z e r o space a t space s o m e space p o i n t space b e t w e e n space t h e m
fraction numerator K q 1 over denominator x end fraction plus fraction numerator K q 2 over denominator r minus x end fraction equals 0
fraction numerator K cross times 20 cross times 10 to the power of negative 6 end exponent over denominator x end fraction plus fraction numerator K cross times left parenthesis negative 4 cross times 10 to the power of negative 6 end exponent right parenthesis over denominator 0.5 minus x end fraction equals 0
fraction numerator K cross times 20 cross times 10 to the power of negative 6 end exponent over denominator x end fraction equals fraction numerator K cross times left parenthesis 4 cross times 10 to the power of negative 6 end exponent right parenthesis over denominator 0.5 minus x end fraction
2.5 minus 5 x equals x
6 x equals 2.5
x equals fraction numerator 2.5 over denominator 6 end fraction
x equals 0.416 m
x equals 41.6 c m space f r o m space t h e space c h a r g e space 20 cross times 10 to the power of negative 6 end exponent
Answered by Utkarsh Lokhande | 22 Jul, 2020, 03:23: PM
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