Question

Which of the following best describe the electromagnetic induction?
A) The ability of a changing magnetic field to induce voltage in a conductor.
B) The ability of a conductor to generate a magnetic field.
C) The ability of a static magnetic field to induce a voltage in a conductor.
D) The ability of a permanent magnet to induce a voltage in a coil.
E) The ability of a conductor to induce a magnetic field.

Answer 1

Hint: Take into account the process of electromagnetic induction when a conductor is placed in a fluctuating magnetic field. The movement of either magnetic field or coil causes the generation of electricity.

Complete step by step solution:
We know electromagnetic induction is the process in which an induction current is produced. It is produced in a conductor (closed circuit or in a coil) by changing the magnetic field linked with it. As we know, it can also be produced by moving the coil or circuit through a stationary magnetic field. And as a result a voltage is produced across the conductor.

Current is produced in a conductor when it is moved through a magnetic field because the magnetic lines of force are applying a force on the free electrons in the conductor and causing them to move. This process of generating current in a conductor by placing the conductor in a changing magnetic field is called induction.

By considering all the data analysed we can conclude the electromagnetic induction is the generation of electric current induced in the conductor due to the change in magnetic field.

Final answer is: Option (A), The ability of a changing magnetic field to induce voltage in a conductor.

Note: Fluctuation in magnetic fields causes currents to flow in conductors placed within them. And the movement of the coils or conductor within a magnetic field causes the generation of electricity and it is the principle of working of generators. An emf (electromotive force) is the result of change in magnetic flux linked to a closed circuit.