E&M laws Flashcards
1
Q
State faradays law
A
Faradays law states that the induced emf is proportional to the rate of change of flux linkage
2
Q
State lenz law
A
If an induced current flows, its direction is always such that it will oppose the change in flux which produced it
3
Q
What is self induction
A
The induction of an electromotive force (voltage) in a circuit when the current in that circuit is varied (aka back emf). A collapsing magnetic field generates a back emf. A building magnetic field opposes the creation of the field.
4
Q
What happens when a conductor crosses magnetic field lines
A
A current is induced, this is called flux linkage
5
Q
A
