Question

A positive charge q is placed in a spherical cavity made in a positively charged sphere

Answer 1

Explanation:

Since, sphere is uniformly charged therefore, charge distributed at a distance x>l will have no effect on the charge particle. Since by applying gauss's law we find that electric field at x=l due to charge present in sphere at x>l will be zero. Therefore, no effect due to that charge.

Now , only electric field present or acting on the charge particle will be due to charge lying in the region 0<x<l and that field will be radially outwards and in the direction of

l

therefore, F=qE therefore, direction of the force is also same in the same direction.

Therefore, option(A), (B)

Answer 2

Answer:

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