GEOLOGY

EARTH SCIENCE

MAGNETISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A magnet can move in a coil of wire to produce electricity in which system?
A
Generator
B
Motor
C
Magnet
D
Transformer
Explanation: 

Detailed explanation-1: -What Is Electromagnetic Induction? Electromagnetic induction is the process of generating electric current with a magnetic field. It occurs whenever a magnetic field and an electric conductor, such as a coil of wire, move relative to one another.

Detailed explanation-2: -When a coil of wire and a bar magnet are moved in relation to each other, an electric current is produced. This current is produced because the strength of the field at the location of the coil changes.

Detailed explanation-3: -Electromagnets are used in many generators and power plants.

Detailed explanation-4: -When a magnet is moved into a coil of wire, changing the magnetic field and magnetic flux through the coil, a voltage will be generated in the coil according to Faraday’s Law. In the example shown below, when the magnet is moved into the coil the galvanometer deflects to the left in response to the increasing field.

Detailed explanation-5: -Simple Generator using Magnetic Induction The simple dynamo type generator above consists of a permanent magnet which rotates around a central shaft with a coil of wire placed next to this rotating magnetic field.

There is 1 question to complete.