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In an AC generator, a coil with N turns,...

In an AC generator, a coil with N turns, all of the same area A and total resistance R, rotates with frequency `(omega)` in a magnetic field B. The maximum value of emf generated in the coils is

A

`NABRomega`

B

`NAB`

C

`NABR`

D

`NABomega`

Text Solution

Verified by Experts

The correct Answer is:
D
The emf generated would be maximum when flux(cutting) would be maximum i.e., angle between area vector of coil and magnetic field is `0^@`. The generated is given by [as a function of time]
`e=NBAomegacosomegat rArre_(max)=NABomega`
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NARAYNA-ELECTROMAGNETIC INDUCTION-EXERCISE-1 (C.W)
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  15. A coil of wire of a certain radius has 600 turns and a self-inductance...

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  17. If a current of 10 A changes in one second throught a coil, and the in...

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  18. A coil of 100 turns carries a current of 5mA and creates a magnetic fl...

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  19. A solenoid of lenght 30 cm with 10 turns per centimetre and area of cr...

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  20. A coil has self inductance of 0.01 H. The current through it is allowe...

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