Question

1. A circular current loop made from flexible wire is located in a magnetic field. Describe three ways an emf can be induced in the loop.

Answer 1

EMF is caused by a change in the magnitude of the magnetic flux through the loop.

It can be done:

a) by changing the shape of the loop

b) by changing the angle between the plane of the loop and the direction of the magnetic field

c) by changing the magnitude of the magnetic field