(i) A current is started in a wire held near a loop of wire.

(ii) The current is switched off in a wire held near a loop of wire.

(iii) A magnet is moved through a loop of wire.

(iv) A loop of wire is held near a magnet.

Solution:

(i) Yes

When a current-carrying conductor is exposed to a fluctuating magnetic field, electromagnetic induction occurs.

(ii) Yes

A current is generated in a wire held near a loop of wire when the current is switched on. The magnetic field changes as a result of the change in current, and the phenomena of electromagnetic induction is observed in the wire loop.

(iii) Yes

A current is stopped in the wire held near a loop of wire when the current is switched off. The magnetic field changes as a result of the change in current, and the phenomena of electromagnetic induction is observed in the wire loop.

(iv) No

There is a change in magnetic field lines through the coil when a magnet is moved through a loop of wire. Electromagnetic induction occurs in the coil as a result of the change in magnetic field.