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?

• A. 1
• B. 2
• C. same
• D. Data are insufficient to decide

Answer 1

The correct option is A 1

$e=-L\frac{di}{dt}$
$\frac{di}{dt}=\text{slope}$
slope of graph 1 is greater then graph 2. So graph 1 emf is greater then graph 2 emf. Hence option (A) is correct.