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Two charge q &-2q are placed at some distnace the locus point in the place of the charge,where the potential is be zero?
A.-Circle
B.-Ellipse
3.-parabola

suryansh , 12 Years ago
Grade 12
anser 4 Answers
Sher Mohammad
Ans is A:Circle
let charge q is at (0,0)and -2q at(r,0)
any point is (h,k)
potential is zero so kQq/sqrt(h^2+k^2)=2kQq/sqrt((h-r)^2+k^2)
=> 4(h^2+k^2)=((h-r)^2+k^2)
=>3h^2+3k^2+2rh-r^2=0 its circle

Sher Mohammad, IIT Delhi
faculty Askiitians

Last Activity: 11 Years ago
aswanth
Circle
 
Last Activity: 11 Years ago
aswanth
circle
Last Activity: 11 Years ago
Pinku
Answer is circle
Last Activity: 11 Years ago
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