What phenomenon occurs when a changing magnetic field induces an electric current in a nearby circuit?*Electromagnetic inductionMagnetic Dipole momentHall effect

The phenomenon that occurs when a changing magnetic field induces an electric current in a nearby circuit is called Electromagnetic Induction.

Here are the steps to explain this phenomenon:

1. When a magnetic field changes near a circuit or wire, it creates a difference in the magnetic flux, which is the quantity of magnetism or magnetic field passing through a specific area.

2. According to Faraday's Law of Electromagnetic Induction, this change in magnetic flux induces an electromotive force (EMF) or voltage in the circuit.

3. If the circuit is closed, this induced voltage will cause an electric current to flow. This is known as induced current.

4. The direction of the induced current is such that it creates a magnetic field to oppose the change in magnetic flux. This is known as Lenz's Law.

5. Therefore, the phenomenon of inducing an electric current in a circuit by changing the magnetic field is known as Electromagnetic Induction.

Note: The other terms mentioned, Magnetic Dipole Moment and Hall Effect, are different concepts related to magnetism and electricity. Magnetic Dipole Moment is a measure of the strength of a magnetic source, while Hall Effect is the production of a voltage difference across an electrical conductor, transverse to an electric current in the conductor and a magnetic field perpendicular to the current.