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MEO Class IV – MET : 2023/MAY/07
Question

Q7. a) What is self-induction? (6)

b) A coil of 800 turns is wound on a wooden former and a current of 5A is passed through it to produce a magnetic flux of 200 micro-webers. Calculate the average value of e.m.f. induced in the coil when the current is

i) switched off in 0.08 seconds

ii) reversed in 0.2 seconds. (10)

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