Question

Where do magnetic field lines form circles in the space?

• A. Near a permanent magnet
• B. Around a current-carrying wire
• C. Inside a solenoid
• D. Inside a current-carrying loop

Answer 1

The correct option is B Around a current-carrying wire

Only in the case of current carrying straight wire, the magnetic field lines form circles in the space, as shown in the figure.

In rest of the cases, the magnetic line form circles, passing through the magnet also.. i.e., circles are not entirely in the space.