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Electromagnetic Induction question

2023 · Q167
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Electromagnetic Induction question

2023 · Q167

NEETPhysicsElectromagnetic InductionMCQ+4 / −1

An emf is generated by an ac generator having 100 turn coil, of loop area 1 m21 \mathrm{~m}^21 m2. The coil rotates at a speed of one revolution per second and placed in a uniform magnetic field of 0.05 T0.05 \mathrm{~T}0.05 T perpendicular to the axis of rotation of the coil. The maximum value of emf is :-

  1. A
    3.14 V
  2. B
    31.4 V
  3. C
    62.8 V
  4. D
    6.28 V
View written solutionFree

Correct answer: B

$$\omega=2\pi \frac{\mathrm{rad}}{\mathrm{sec}}$$

$$\mathrm{E_{max}=NBA\omega}$$

$$=100\times0.05\times1\times2\pi$$

$=10\times\pi$

$=31.4\,\mathrm{V}$

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