1.

If the current in primary coil changes at the rate of 120 ampere per second then emf induced in the secondary coil is​

Answer»

Answer:

Use the FORMULAE, Emf = -([email protected])/dt

where @ == FI

and, fi = B.i

so, emf = -B(di/dt)

emf = -B(120)

emf = -120B

if type of coil and RADIUS is given then calculate B too.

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