Assertion (A): The outer body of an aircraft is made of metal, which protects the persons sitting inside from lightning strikes. Reason (R): The electric field inside a cavity enclosed by a conductor is zero. Choose the correct answer.
Options

Question

Assertion (A): The outer body of an aircraft is made of metal, which protects the persons sitting inside from lightning strikes. Reason (R): The electric field inside a cavity enclosed by a conductor is zero. Choose the correct answer.

Options

G1 Physics · Accepted Answer

A conducting enclosure provides electrostatic shielding. External charges redistribute on the conductor's outer surface so that the electric field inside the enclosed cavity is zero under electrostatic conditions. Hence the metallic aircraft body protects occupants from the electric field associated with external lightning charge distribution. Therefore both A and R are correct, and R explains A. Correct option: A.