Electromagnetic induction

Question 1 of 10

Faraday's law states that the induced e.m.f. is proportional to

Question 2 of 10

The induced e.m.f. in a coil increases if

Question 3 of 10

Eddy currents in a transformer core are reduced by

Question 4 of 10

Lenz's law states that the induced current flows in a direction that

Question 5 of 10

Faraday's law states that the induced e.m.f. is proportional to the

Question 6 of 10

A coil of 200 turns has its flux changed from 0.05 Wb to 0 in 0.1 s. The average induced e.m.f. is

Question 7 of 10

Lenz's law states that the induced current

Question 8 of 10

A generator converts

Question 9 of 10

An a.c. generator changes

Question 10 of 10

A straight conductor 0.5 m long moves at 4 m/s perpendicular to a 0.2 T field. The induced e.m.f. is