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Physics

Physics · Quick practice · answer shown after each question

Electromagnetic induction

Question 1 of 10

Question 1 of 10

A generator converts

Question 2 of 10

Question 2 of 10

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

Question 3 of 10

Question 3 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 4 of 10

Question 4 of 10

Lenz's law states that the induced current

Question 5 of 10

Question 5 of 10

An a.c. generator changes

Question 6 of 10

Question 6 of 10

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

Question 7 of 10

Question 7 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

Question 8 of 10

Question 8 of 10

Eddy currents in a transformer core are reduced by

Question 9 of 10

Question 9 of 10

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

Question 10 of 10

Question 10 of 10

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

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.