Question

A conductor of lenght 3m moving in a uniform magnetic feild of strength 100 T . It covers a distance of 70m in 5 sec. Its plane of motion makes an angle 30° with the direction of magnetic feild . Calculate the emf induced in it.

Answer 1

Induced emf will be equal to 2100 volt

Explanation:

We have given length of the conductor l = 3 m

Strength of magnetic field B = 100 T

Distance d = 70 m

Time taken = 5 sec

So velocity $v=\frac{d}{t}=\frac{70}{5}=14m/sec$

Angle between plane and magnetic field $\Theta =30^{\circ}$

Induced emf is equal to $e=bvlsin\Theta =100\times 14\times 3\times sin30^{\circ}=2100volt$

So induced emf will be equal to 2100 volt

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