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Two spheres of radius a and b respective...

Two spheres of radius `a` and `b` respectively are charged and joined by a wire. The ratio of electric field of the spheres is

A

`a//b`

B

`b//a`

C

`a^2//b^2`

D

`b^2//a^2`

Text Solution

Verified by Experts

The correct Answer is:
B
`V_1=V_2implies (KQ_1)/a=(KQ_2)/bimpliesQ_1/Q_2=a/b`
`E_1=(KQ_1)/(a^2)and E_2(KQ_2)/(b^2)`
`E_1/E_2=(KQ_1)/a^2xxb^2/(KQ_2)=a/bxxb^2/a^2=b/a`
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