Question

When we bring a magnetic compass needle near a current-carrying wire

• A. It makes the magnetic needle point north-south
• B. It makes the magnetic needle point east-west
• C. It has no effect on the magnetic needle
• D. It deflects the magnetic needle in any direction.

Answer 1

The correct option is D

It deflects the magnetic needle in any direction.

1. The needles of the magnetic compass always point in a north-south direction because of the earth's magnetic field.
2. A current-carrying conductor can produce a magnetic field.
3. When a magnetic compass is placed near a current-carrying conductor, the magnetic needles get deflected due to the magnetic field of the current-carrying conductor.
4. The deflection of the needle will be depended upon the direction of the current flow.

Hence option(D) is correct.