Chapter 23 Magentic Fields

Question 1

Define magnetic flux

Answer 1

magnetic flux density times by cross sectional area

Question 2

what is faradays law

Answer 2

induced e.m.f./voltage is proportional to rate of change of flux linkage through it

Question 3

what is lenz law

Answer 3

the direction of the induced e.m.f./voltage is such as to
oppose the motion/change that produced it

Question 4

what is magnetic flux density

Answer 4

he force acting per unit current per unit length on a wire placed at right angles to the magnetic field

B = F/ I L