Question

A uniformly charged dielectric sphere has a spherical cavity. The distance between the centre of the sphere and that of the cavity is $a$. Find the field inside the cavity.

• A. $\frac{\rho \overrightarrow{a}}{{\epsilon }_0}$
• B. $\frac{3\rho \overrightarrow{a}}{{\epsilon }_0}$
• C. $\frac{\rho \overrightarrow{a}}{3{\epsilon }_0}$
• D. zero

Answer 1

The correct option is C $\frac{\rho \overrightarrow{a}}{3{\epsilon }_0}$