Q- A coil consists of 200 turns. Each turn is a square of wire of side 18cm. A magnetic field produced by an electro-magnet and directed perpendicular to the plane of the coil is switched on. If the field changes linearly from 0 to 0.5T in 0.8s:
(a) What is the induced emf in the coil while the field is changing?
(b) What is the magnitude of the induced current in the coil while the field is changing if the coil is connected to an external circuit of total resistance 2 Ω.?
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