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A flat circular coil having N turns (tig...

A flat circular coil having `N` turns (tightly wound `D`) is placed in a time varying magnetic field `B = B_(0) sin omega t`. The outer radius of the coil is `R`. Determine the maximum value of the induced emf in the circuit.

A

`piR^2NB_0omega`

B

`3piR^2NB_0omega`

C

`(piR^2NB_0)/(omega)`

D

`(piR^2NB_0omega)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
D

`emf=(dphi)/(dt)`
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NARAYNA-ELECTROMAGNETIC INDUCTION-EXERCISE-1 (C.W)
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  11. Two inductors each of inductance L are joined in parallel. Their equiv...

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  12. An air-cored coil has a self-inductance of 0.1 H. A soft iron core of ...

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  13. A solenoid is 1.5 m long and its inner diameter is 4.0 cm . It has thr...

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  14. A coil of wire of a certain radius has 600 turns and a self-inductance...

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  15. Two coils are at fixed location: When coil 1 has no corrent and the cu...

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

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

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

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

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  20. The average self-induced emf in a 25m H solenoid when the current in i...

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