EASY
CUET (UG)
IMPORTANT
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Assertion: In a given situation, the direction of induced current given by Lenz's Law and Fleming's right hand rule are the same.

Reason: Statements of both the laws are the same.

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Important Questions on Electromagnetic Induction

EASY
CUET (UG)
IMPORTANT
A solid metal cube of edge length 2 cm is moving in the positive y-direction, at a constant speed of 6 m s-1. There is a uniform magnetic field of 0.1 T in the positive z-direction. The potential difference between the two faces of the cube, perpendicular to the x-axis, is
EASY
CUET (UG)
IMPORTANT
A 10 m long horizontal wire extends from North East to South West. It is falling with a speed of 5.0 m s-1, at right angles to the horizontal component of the earth's magnetic field of 0.3×10-4 Wb m-2. The value of the induced emf in the wire is:
EASY
CUET (UG)
IMPORTANT

A conducting rod PQ, of length L=1.0 m, is moving with a uniform speed v=2 m s-1, in a uniform magnetic field B=4.0 T, directed into the paper. A capacitor of capacity C=10 μF is connected, as shown in diagram. Then,
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EASY
CUET (UG)
IMPORTANT
The two rails of a railway track, insulated from each other and the ground, are connected to a millivoltmeter. What is the reading of the millivoltmeter when a train passes at a speed of 180 km hr-1 along the track, given, that the vertical component of earth's magnetic field is 0.2×10-4 Wb m-2 and rails are separated by 1 metre.
EASY
CUET (UG)
IMPORTANT
A conducting wheel rim in which there are three conducting rods of each of length l is rotating with constant angular velocity ω in a uniform magnetic field B as shown in figure. The induced potential difference between its centre and rim will be

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EASY
CUET (UG)
IMPORTANT
A metal cube of side 2 cm is travelling with a velocity v=6m/sj^ in a magnetic field of B=0.1  k^T, then find potential difference between two faces perpendicular to x- axis.
EASY
CUET (UG)
IMPORTANT

A conducting rod AB of length l=1 m, is moving at a velocity v=4 m s-1, making an angle 30 with its length. A uniform magnetic field B = 2T exists in a direction perpendicular to the plane of motion. Then,

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EASY
CUET (UG)
IMPORTANT
The wing span of an aeroplane is 36 m. If the plane is flaying at 400 km h-1, the emf induced between the wings tips is (assume B=4×10-5 T)