Get premium membership and access revision papers with marking schemes, video lessons and live classes.
(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