Question:

In an ac generator, a rectangular coil of $100$ turns each having area $14 \times 10^{-2} m ^2$ is rotated at $360\, rev / min$ about an axis perpendicular to a uniform magnetic field of magnitude $3.0 T$ The maximum value of the emf produced will be ________ $V$
(Take \(\pi =\frac{22}{7}\))

Updated On: Jul 8, 2024
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Correct Answer: 1584

Solution and Explanation

The correct answer is 1584.


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Questions Asked in JEE Main exam

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Concepts Used:

Electromagnetic Induction

Electromagnetic Induction is a current produced by the voltage production due to a changing magnetic field. This happens in one of the two conditions:-

  1. When we place the conductor in a changing magnetic field.
  2. When the conductor constantly moves in a stationary field.

Formula:

The electromagnetic induction is mathematically represented as:-

e=N × d∅.dt

Where

  • e = induced voltage
  • N = number of turns in the coil
  • Φ = Magnetic flux (This is the amount of magnetic field present on the surface)
  • t = time

Applications of Electromagnetic Induction

  1. Electromagnetic induction in AC generator
  2. Electrical Transformers
  3. Magnetic Flow Meter