Question

Electromagnetic induction means-
a) Charging of an electric conductor.
b) Production of magnetic field due to a current flowing through a coil.
c) Generation of a current in a coil due to relative motion between the coil and the magnet.
d) Motion of the coil around the axle in an electric motor.

Answer 1

Dear Student,

◆ Answer - (c)

Electromagnetic induction means generation of a current in a coil due to relative motion between the coil and the magnet.

● Electromagnetic induction -

• Electromagnetic induction is when a conductor moving through a magnetic field induces an electrical current in the conductor.
• According to Lenz rule, direction of induced current is such that it opposes the cause of changing magnetic flux.
• For example, functioning of bicycle dynamos.

Hope this is helpful...

Answer 2

Answer:

Option (C)

Explanation:

Electromagnetic induction means generation of a current in a coil due to relative motion between the coil and the magnet.

Electromagnetics induction works on the faraday laws,which states that,

"The emf is produced due to the change in magnetic field i.e the changing of magnetic flux leads to produced an induced emf.

if N is the number of turns in a coil then mathematical statement of a faraday law is,

$e = N\dfrac{-d\phi }{dt}$

where $\phi$ is the flux.