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MHT CET Medical202626 April 2026Morning ShiftPhysicsElectromagnetic InductionActual

In an a.c. generator, a rectangular coil of 1000 turns each having area 10⁻² m ^2 is rotated at 180 r.p.m. about an axis perpendicular to a uniform magnetic field of magnitude 2 T. The maximum value of e.m.f. produced will be

Options

  1. A60 V
  2. B120 V
  3. C180 V
  4. D200 V

Correct answer

B. 120 V

Step-by-step solution

The maximum e.m.f. produced in an a.c. generator is given by E₀ = NAB Given: N = 1000 A = 10⁻² m ^2 B = 2 T Frequency f = 180 r.p.m. = 180 60 Hz = 3 Hz Angular velocity = 2 f = 2 3 = 6 rad/s Substituting the values: E₀ = 1000 10⁻² 2 6 E₀ = 10 12 = 120 V Answer: 120 V

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