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A coil of cross-sectional area A having ...

A coil of cross-sectional area A having n turns is placed in uniform magnetic field B. When it is rotated with an angular velocity `omega`, the maximum e.m.f. induced in the coil will be :

A

`nBA omega`

B

`(3)/(2)nBA omega`

C

`3nBA omega`

D

`(1)/(2)nBA omega`

Text Solution

Verified by Experts

The correct Answer is:
A
Induced emf in a coil, `e=(d phi)/(dt)= NBA sin omega t`
Also, `e=e_(0)sin omega t`
`therefore` Maximum emf induced, `e_(0)=nBA omega`
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DISHA PUBLICATION-ELECTROMAGNETIC INDUCTION -EXERCISE - 2 : Concept Applicator
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  10. A square coil of side 25cm having 1000 turns is rotated with a uniform...

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  14. A 10-meter wire is kept in east-west direction. It is falling down wit...

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  15. A circular loop of radius 0.3 cm lies parallel to amuch bigger circula...

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  16. Consider the situation shown. The wire AB is sliding on fixed rails wi...

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  17. A coil is wound as a transformer of rectangular cross section. If all ...

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  18. Shown in the figure is a circular loop of radius r and ressistance R. ...

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  19. A coil having 'n' turns and resistance R Omgea is connected with a gal...

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  21. Figure shows a conducting rod of negligible resistance that can slide ...

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