Question 97: Electromagnetic Induction

Question

The figure shows a square loop L of side 5 cm which is connected to a network of resistances. The whole setup is moving towards right with a constant speed of 1 cm s
-1
. At some instant, a part of L is in a uniform
magnetic field of 1 T, perpendicular to the plane of the loop. If the resistance of L is 1.7 $$\Omega $$, the current in the
loop at that instant will be close to :

Accepted Answer

Since it is a balanced wheatstone bridge, its equivalent resistance = $${4 \over 3}\Omega $$
$$\varepsilon  = B\ell v = 5 	imes {10^{ - 4}}V$$
So total resistance
$$R = {4 \over 3} + 1.7 \approx 3\Omega $$
$$ 	herefore i = {\varepsilon  \over R} \approx 166\,\mu A \approx 170\,\mu A$$

Answer

115 $$\mu $$A

Answer

170 $$\mu $$A

Answer

60 $$\mu $$A

Answer

150 $$\mu $$A

Electromagnetic Induction

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