First slide

Magnetic flux and induced emf

Question

The magnetic flux linked with a circuit of resistance 100 ohm increases from 10 to 60 webers. The amount of induced charge that flows in the circuit is (in coulomb)

Moderate

A

0.5
B

5
C

50
D

100

Solution

$Induced charge Q = - \frac{N}{R} (ϕ_{2} - ϕ_{1}) = \frac{1}{100} (60 - 10) = 0 .5 C$

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