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Question

Two identical inductors carry currents that vary with time according to linear laws (as shown in figure). In which of the two inductors is the self induced emf higher?

  1. 1
  2. 2
  3. Data are insufficient to decide 
  4. same


Solution

The correct option is A 1
e=Ldidt
didt=slope
slope of graph 1 is greater then graph 2. So graph 1 emf is greater then graph 2 emf. Hence option (A) is correct.

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