Electromagnetic induction Flashcards
1
Q
what is magnetic flux
A
the number of field lines passing through an area.
2
Q
A
3
Q
to calculate magnetic flux
A
4
Q
How do you find the magnetic flux density?
A
divide the magnetic flux by the area
5
Q
what is Faradays law of induction?
A
change in magnetic flux induce electromotive force (emf) , creating a current
6
Q
to solve for how much voltage is needed (emf)
A
7
Q
How do AC generators work?
A
8
Q
what is Lenz’s laws?
A
the direction of induced current will be such that the change in magnetic flux is opposed by the induced magnetic field.
9
Q
what are transformers?
A
10
Q
what is electromagnetic radiation?
A
