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A positive charge q is placed in a spher...

A positive charge q is placed in a spherical cavity made in a positively charged sphere. The centres of sphere and cavity are displaced by a small distance `vec(l)`. Force on charge q is :

A

in the direction parallel to vector `vec(I)` .

B

in radial direction with respect to centre of cavity

C

in a direction which depends on the magnitude of charge density in sphere

D

direction cannot be determined

Text Solution

Verified by Experts

The correct Answer is:
A

Since field inside the cavity is parallel to`overline l`. So force on charge q will be parallel to `overline l`.
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