Question

a point charge of 10*10^-8C is at distance of 1 m from another point charge of 10*10^-8C in air Find electric potential at a distance 0.2 m from weaker charge ​

Answer 1

Answer:

Let the distance of the point from charge 5×10

−8

C be r.

Hence the distance of this point from the other charge is 16−r.

Since the potential at the point is zero,

r

k(5×10

−8

)

+

16−r

k(−3×10

−8

)

=0

⟹r=10cm