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A coil having a number of turns N and cross-sectional area A is rotated in a uniform magnetic field B with an angular velocity ω. The maximum value of the emf induced in it is

Correct answer: C. NBA⋅ω

  • A. NBA/ω
  • B. ) NBA/ω^2
  • C. NBA⋅ω
  • D. NBA⋅ω^2

Explanation

C is the correct answer. The maximum value of the emf (Emax ) induced in a coil rotating in a uniform magnetic field is given by Faraday's law as Emax =N⋅B⋅A⋅ω, where N is the number of turns, B is the magnetic field strength, A is the cross-sectional area, and ω is the angular velocity.

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About Electromagnetism

Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.

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