Question

A straight wire is kept horizontally along the east-west direction. If a steady current flows in the wire from east to west, the magnetic field at a point above the wire will point towards:

• A. East
• B. West
• C. North
• D. South

Hint:

Use the right-hand thumb rule to determine the direction of the magnetic field around a current-carrying wire.

Answer 1

The Correct Option is C

Application of Right-Hand Thumb Rule:
- The magnetic field due to a current-carrying wire follows the right-hand thumb rule:
- Point the thumb in the direction of current (east to west).
- The curled fingers indicate the direction of the magnetic field around the wire.
- At a point above the wire, the magnetic field is directed towards the north.
Thus, the correct answer is North.