Chapter 23 Magentic Fields Flashcards
1
Q
Define magnetic flux
A
magnetic flux density times by cross sectional area
2
Q
what is faradays law
A
induced e.m.f./voltage is proportional to rate of change of flux linkage through it
3
Q
what is lenz law
A
the direction of the induced e.m.f./voltage is such as to
oppose the motion/change that produced it
4
Q
what is magnetic flux density
A
he force acting per unit current per unit length on a wire placed at right angles to the magnetic field
B = F/ I L
