An uncharge aluminium block has a cavity within it. The block is placed in a region where a uniform electric field is directed upward. Which of the following is a correct statement descrining conditions in the interior of the block's cavity?

Options

A. The electric field in the cavity is directed upward.
B. The electric field in the cavity is directed downward.
C. There is no electric field in the cavity.
D. The electric field in the cavity is of varying magnitude and is zero at the exact center.

Answer

C

Explanation

c. Electric field is zero inside a metallic cavity
if no charge is present in the cavity, whatever
be the field outside.