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 Form 4 Physics electromagnetic induction topical questions and answers

(a) (i) State the laws of electromagnetic induction.
(ii) Describe an experiment to demonstrate Faraday’s law.
(b) (i) A researcher studying the behavior of set-up transformer made the following observations:
“More joules per coulomb and fewer coulombs per second at the output than at the input terminals”
Explain why the observation does not imply a violation of the principle of conservation of energy.
(ii) A transformer of 480 turns in the primary coil is used to connect a 9 volt a.c. electric device to a 240V a.c. mains power supply. Calculate
the number of turns in the secondary coil

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