Which statement is correct for the phenomenon of periodic electromagnetic induction in a rotating coil?

  • A
    Phase difference between induced $emf$ and induced current is $\pi$.
  • B
    Phase difference between induced $emf$ and induced current is zero.
  • C
    Phase difference between induced $emf$ and induced current is $\pi / 2$.
  • D
    Frequency of all induced parameters is double the rotational frequency of the coil.

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Similar Questions

The number of turns in the coil of an $AC$ generator are $50$ and its cross-sectional area is $2.5 \ m^2$. This coil is revolving in a uniform magnetic field of strength $0.3 \ T$ with a uniform angular velocity of $60 \ rad \ s^{-1}$. The resistance of the circuit comprising the coil is $500 \ \Omega$. The maximum induced $emf$ and maximum current produced in the generator are:

$A$ ring of resistance $10 \Omega$,radius $10 \text{ cm}$,and $100$ turns is rotated at a rate of $100$ revolutions per second about a fixed axis which is perpendicular to a uniform magnetic field of induction $10 \text{ mT}$. The amplitude of the current in the loop will be nearly $A$ (Take $\pi^2 = 10$).

Discuss the principle and construction of an $A.C.$ generator (dynamo). Derive the formula for the induced $emf$ in an $A.C.$ generator.

Discuss the characteristics of the induced $emf$ in an $AC$ generator.

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The number of turns in the coil of an $AC$ generator is $100$ and its cross-sectional area is $2.5 \ m^2$. The coil is revolving in a uniform magnetic field of strength $0.3 \ T$ with a uniform angular velocity of $60 \ rad \ s^{-1}$. The value of maximum induced emf is . . . . . . $kV$.

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