First slide

Inductance

Question

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

Difficult

A

1
B

2
C

same
D

data are insufficient to decide

Solution

$i n d u c e d e m f e = - L \frac{d i}{d t} h e r e - \frac{d i}{d t} i s m o r e f o r 1 h e n c e e m f o f 1 > e m f o f 2$

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