Chapter 17: Electromagnetic Induction

Question 1

Define magnetic flux

Answer 1

The magnetic flux through a plane surface is the product of the component of the magnetic flux density normal to the surface and the area of the surface.

Question 2

Define magnetic flux linkage

Answer 2

The magnetic flux linkage through a loop is the product of the magnetic flux through the loop and the number of turns of wire in the loop.

Question 3

State Faraday’s Law

Answer 3

Faraday’s Law states that the magnitude of the e.m.f. induced is directly proportional to rate of change of magnetic flux linkage.

Question 4

State Lenz’s Law

Answer 4

Lenz’s Law states that the e.m.f. is induced in the direction such as to oppose the change in the flux linkage that is inducing it.