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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 |
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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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