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Q.

Two conducting spheres of radii r1 and r2 have same electric field near their surfaces. The ratio of their electric potential is

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a

r12/r22

b

r2/r1

c

r22/r12

d

r1/r2

answer is D.

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Detailed Solution

E=14πε0×q1r12 and E=14πε0×q2r22 ∴ V1V2=14πε0×q1r114πε0×q2r2=r2r1

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