8a. Magnetic Fields

Question 1

Flemings left hand rule - state the meaning of each of the fingers

Answer 1

First finger - field
Middle finger - current
Thumb - force or motion

Question 2

Flemings right hand rule - state the meaning of each of the fingers

Answer 2

First finger - field
Middle finger - current
Thumb - force or motion

Question 3

Lenz’s Law

Answer 3

The induced EMF and hence current is in a direction such to oppose the change in flux that created it

Question 4

Faradays Law

Answer 4

The induced EMF is equal to the rate of change of magnetic flux linkage