Question

In order to generate a current from a magnet, which of the following would generate a current?

Spinning a magnet near a wire

Placing the north end of a magnet near a wire

Place the south end of a magnet near a wire

Line the magnet up directly with the wire

Answer 1

To generate a current in a wire using a magnet, you need to change the magnetic field around the wire. According to Faraday's Law of Electromagnetic Induction, a current can be induced in a wire when there is a change in the magnetic field through the wire.

Among the options listed:

1. **Spinning a magnet near a wire** - This would generate a current because the motion of the magnet creates a changing magnetic field around the wire, inducing a current.

2. **Placing the north end of a magnet near a wire** - This alone will not generate a current unless there is movement or change in the magnetic field.

3. **Placing the south end of a magnet near a wire** - Similar to the north end, this will not generate a current without movement or change.

4. **Lining the magnet up directly with the wire** - This will not generate a current unless the magnet is moved or the orientation is changed to create a change in the magnetic field.

Therefore, the option that would generate a current is **spinning a magnet near a wire**.