# What is produced when a magnet moves in a coil of wire?

One way of generating a current is to move a magnet into or out of a coil. This movement causes a voltage to be induced across the ends of the coil. Instead, generators induce a current by spinning a coil of wire inside a magnetic field, or by spinning a magnet inside a coil of wire.
A.

### How can you use a magnet to induce an electric current in a coil of wire?

A coil of wire with an electric current flowing through it becomes a magnet. Putting iron inside a current-carrying coil greatly increases the strength of the electromagnet. Changing magnetic fields induce electric currents in copper and other conductors.
• #### How can you use a magnet to induce an electric current in a coil of wire?

A coil of wire with an electric current flowing through it becomes a magnet. Putting iron inside a current-carrying coil greatly increases the strength of the electromagnet. Changing magnetic fields induce electric currents in copper and other conductors.
• #### Why is a voltage induced when a magnet moves through a coil?

Magnet and coil. The voltage is induced, and so the current is generated, only when the magnet and the wire (coil) move relative to each other. This is because a conductor must cut across magnetic field lines for a voltage to be induced.
• #### Why magnetic field is produced by moving charges?

A charged particle moving without acceleration produces an electric as well as a magnetic field. It produces an electric field because it's a charge particle. But when it is at rest, it doesn't produce a magnetic field. All of a sudden when it starts moving, it starts producing a magnetic field.
B.

### Why is a voltage induced when a magnet moves through a coil?

Magnet and coil. The voltage is induced, and so the current is generated, only when the magnet and the wire (coil) move relative to each other. This is because a conductor must cut across magnetic field lines for a voltage to be induced.
• #### How can you increase the size of the induced voltage?

To increase the induced voltage:
1. move the magnet faster.
2. use a stronger magnet.
3. increase the number of turns on the coil.
4. increase the area of the coil.
• #### How can you use a magnet to induce an electric current in a coil of wire?

A coil of wire with an electric current flowing through it becomes a magnet. Putting iron inside a current-carrying coil greatly increases the strength of the electromagnet. Changing magnetic fields induce electric currents in copper and other conductors.
• #### Why is there an induced emf?

It is the change in magnetic field that creates the current. More basic than the current that flows is the emfthat causes it. The current is a result of an emf induced by a changing magnetic field, whether or not there is a path for current to flow.
C.

### Why does a change in magnetic flux induce a current?

This current flows because something is producing an electric field that forces the charges around the wire. (It cannot be the magnetic force since the charges are not initially moving). A changing magnetic field through a coil of wire therefore must induce an emf in the coil which in turn causes current to flow.
• #### What happens when a current runs through a coil of wire?

Magnetic currents flow from one side of the coil to the other passing in the hole and creating a magnetic field. If iron is inside the coil the magnetic field is stronger. When the current flows in the coil,"MAGNETIC EIELD" will produce,simple.
• #### What is the relationship between electricity and magnetism?

In the similar way, a changing magnetic field produces an electric current in a wire or conductor. The relationship between electricity and magnetism is called electromagnetism.
• #### Can you have a negative magnetic flux?

The negative sign is explained by Lenz's law. It tells us that the induced E.M.F always opposes the change in magnetic flux associated with a conducting loop. Magnetic flux is a scalar quantity and its positive/negative sign indicates the direction of the magnetic field. Yes, magnetic flux can be negative.

Updated: 2nd October 2019