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Two spheres A and B of radii 17 cm each ...

Two spheres A and B of radii 17 cm each and having charges of 1 and 2 coulombs respectively are separated by a distance of SO cm. The electric field at a point on the line joining the centres of two spheres is approximately zero at some distance from the sphere A. The electric potential at this point is:

A

`6.56xx10^(10)V`

B

`8.12xx10^(7)V`

C

`2.03xx10^(9)V`

D

`1.2xx10^(11)V`

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