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

Question

An uncharged aluminium block has a cavity within it. The block is placed in a region where a uniform electric field which is directed upwards. Which of the following is a correct statement describing conditions in the interior of the block's cavity? (A) The electric field in the cavity is directed upwards. (B) The electric field in the cavity is directed downwards. (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 centre.

Tardigrade Admin · Accepted Answer

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

Q. An uncharged aluminium block has a cavity within it. The block is placed in a region where a uniform electric field which is directed upwards. Which of the following is a correct statement describing conditions in the interior of the block's cavity?

The electric field in the cavity is directed upwards.

The electric field in the cavity is directed downwards.

There is no electric field in the cavity.

The electric field in the cavity is of varying magnitude and is zero at the exact centre.

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