Question

The direction of magnetic field inside a current carrying solenoid is

• A. circular
• B. parallel to axis
• C. perpendicular to the axis
• D. random

Hint:

The magnetic field inside a solenoid is uniform and parallel to its axis, while outside, it spreads out and behaves like that of a bar magnet.

Answer 1

The Correct Option is B

Step 1: Understanding magnetic field in a solenoid.
A solenoid is a long wire wound in a cylindrical shape, and when current flows through it, it produces a magnetic field. The magnetic field lines inside the solenoid are parallel and uniform, aligning in the same direction as the axis of the solenoid. Step 2: Conclusion.
Thus, the direction of the magnetic field inside a current-carrying solenoid is parallel to its axis.
\[ \boxed{\text{parallel to axis}} \]