First slide

Magnetic flux and induced emf

Question

In a coil of area 10 cm² and 10 turns with a magnetic field directed perpendicular to the plane and is changing at the rate of 10⁸ gauss/second. The resistance of the coil is 20 ohm. The current in the coil will be

Moderate

A

5 amp
B

0.5 amp
C

0.05 amp
D

$5 \times 10^{8} amp$

Solution

$I = \frac{e}{R} = \frac{- N (dϕ / dt)}{R} = \frac{10 \times 10^{8} \times 10^{- 4} \times 10^{- 4} \times 10}{20} = 5 A$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App