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Assertion: The magnetic flux can produce induced emf.

Reason: Faraday established induced emf experimentally.

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Important Questions on Electromagnetic Induction

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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Electromagnetic Induction>Exercise>Q 23
A metal disc of radius 100 cm is rotated at a constant angular speed of 60 rad s-1 in a plane at right angles to an external field of magnetic induction 0.05 Wb m-2. The emf induced between the centre and a point on the rim will be
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Electromagnetic Induction>Exercise>Q 24
A circuit area is 0.01 m2 is kept inside a magnetic field which is normal to its plane. The magnetic field changes from 2 T to 1 T in 1 ms. Suppose the resistance of the circuit is 2 Ω. Then the amount of heat evolved is:
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Electromagnetic Induction>Exercise>Q 25
The induced emf of a generator when the flux of poles is doubled and speed is doubled then it,
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Electromagnetic Induction>Exercise>Q 26
What is the dimensional formula for induced emf?
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Electromagnetic Induction>Exercise>Q 27

Write factor on which induced emf will depend.

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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Electromagnetic Induction>Exercise>Q 28
A straight conductor of length 0.4 m is moved with a speed 7 ms-1 along the direction of a uniform magnetic field. What will be the emf induced, If any, across its ends?
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Electromagnetic Induction>Exercise>Q 29
A train is moving with uniform speed from north to south. Will any potential difference be induced between the ends of its axle?
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Electromagnetic Induction>Exercise>Q 30
The induced potential difference across the axle of a train is always the same whether it goes in north-south direction, or east-west direction or any other direction. Explain with reason.