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NEET2011PhysicsElectromagnetic InductionActual

The current i in a coil varies with time as shown in the figure. The variation of induced emf with time would be

Correct answer

3

Step-by-step solution

We know e=-L d i d t During 0 to T 4 , d i d t = constant So, e=- ve For T 4 to T 2 , d i d t =0 e=0 For T 2 to 3 T 4 , d i d t = constant e=+ ve

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