Module 4: Electric and magnetic fields Flashcards
1
Q
Electric field strength
A
Force per unit positive charge.
2
Q
Magnetic flux
A
Magnetic flux = magnetic flux density X cross-sectional area (BA)
3
Q
Weber
A
1Wb = 1Tm^2
4
Q
Magnetic flux linkage
A
The product of magnetic flux and the number of turns.
5
Q
Faraday’s law of electromagnetic induction
A
The magnitude of the induced e.m.f. is equal to the rate of change of magnetic flux linkage.
6
Q
Lenz’s law
A
Any induced current or induced e.m.f. will be established in a direction so as to produce effects which oppose the change producing it.
7
Q
Coulomb’s law
A
Any two point charges exert an electrical force on each other that is proportional to the product of their charges and inversely proportional to the square of the distance between them.
