Question

Two coils (1) & (2) are placed as shown in figure. Coefficient of mutual induction between (1) & (2) is M = 6 H. Find induced emf & induced current in coil (2). (R of coil (2) is $4\Omega )$

• A. emf = 24 V, i = 0
• B. emf = 0, i = 6A
• C. emf = 24 V, i = 6A
• D. emf = 0, i = 0

Answer 1

The correct option is C emf = 24 V, i = 6A

$e=M\frac{d}{dt}=6.\frac{d}{dt}\left\{4t\right\}=24$ volt.
$i=\frac{V}{R}=\frac{24}{4}=6A$