What happens when a magnet moves through a coil of wire?

A voltage is produced when a magnet moves into a coil of wire. This process is called electromagnetic induction . The direction of the induced voltage is reversed when the magnet is moved out of the coil again. If the coil is part of a complete circuit then a current will be induced in the circuit.

Why there is an induced emf when the magnet is pushed into the coil?

As the magnet spins, the magnetic field around the top and bottom of the coil constantly changes between a north and a south pole. This rotational movement of the magnetic field results in an alternating emf being induced into the coil as defined by Faraday’s law of electromagnetic induction.

What happens to the galvanometer when the magnet is moved towards the coil?

When the magnet is moved towards the coil, the needle of galvanometer deflects in one direction. When the magnet is held stationary at that position, the needle of galvanometer returns back to zero position.

What happens to the current in a coil while alternating a magnet inside it?

What happens to the current in a coil while accelerating a magnet inside it? Explanation: A change in the magnetic field induces an emf. When there is an emf, there has to be current. Hence, when the magnet is moved inside a coil, the current in it increases.

What is the induced emf in the coil?

An emf is induced in the coil when a bar magnet is pushed in and out of it. Emfs of opposite signs are produced by motion in opposite directions, and the emfs are also reversed by reversing poles. The same results are produced if the coil is moved rather than the magnet—it is the relative motion that is important.

When coil rotated in a magnetic field then the emf induced is?

What is the average emf induced? Figure 1. When this generator coil is rotated through one-fourth of a revolution, the magnetic flux Φ changes from its maximum to zero, inducing an emf.