1.

If the current changes from 5A to 3A in x sec and inductance is 10H. The emf is 10V, calculate the value of x.(a) 2s(b) 3s(c) 4s(d) 5s

Answer» The correct choice is (a) 2s

To elaborate: We know that:

emf=L(i2-i1)/t

Substituting the values from the question, we get x=2s.


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