Question

The magnetic field inside a long straight solenoid-carrying current

• A. is zero
• B. decreases as we move towards its end
• C. increases as we move towards its end
• D. is the same at all points

Answer 1

The correct option is D is the same at all points

The magnetic field inside a long straight current-carrying solenoid is uniform which is represented by parallel lines. Hence, the magnetic field inside a long straight solenoid carrying current is the same at all points.