First slide

Faraday's law of Electromagnetic induction

Question

A coil of area 100cm² having 50 turns is perpendicular to a magnetic field of intensity 0.02 weber/m². The resistance of the coil is 2 $Ω$ . If it is removed in 1 sec. from the magnetic field, the induced charge produced is

Moderate

A

5 C
B

0.5 C
C

0.05 C
D

0.005 C

Solution

Induced charge q is given by
$\begin{array}{l} q = \frac{NBA}{R} \\ = \frac{50 \times 0 \cdot 02 \times (100 \times 10^{- 4})}{2} = 0 \cdot 005 C \end{array}$

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