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A wire loop is rotated in magneitc field...

A wire loop is rotated in magneitc field. The frequency of change of direction of the induced e.m.f. is.
(1.) Once per revolution
(2.) twice per revolution
(3.) four times per revoution
(4.) six time per revolution

A

Once per revolution

B

Twice per revolution

C

Four times per revolution

D

Six times per revolution

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-ELECTROMAGNETIC INDUCTION-EXERCISE-IA
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  2. A current carrying wire is placed below a coil in its plane, with curr...

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  3. A wire loop is rotated in magneitc field. The frequency of change of d...

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  4. A coil is rotated in a uniform magnetic field about an axis perpendicu...

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  5. Write down the IUPAC name of the following :

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  6. The north of a bar magnet is moved towards a coil along the axis passi...

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  7. Two identical coaxial circular loops carry a current I each ciculating...

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  8. A conducting wire frame is placed is placed in a magnetic field which ...

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  9. In an experiment, a magnet with its magnetic moment along the axis of ...

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  10. A conducting wire frame is placed in a magnetic field which is directe...

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  11. If a current of 0.5 apere flows through a metallic wire for 2 hour the...

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  12. Consider the situation shown in the figure, If the current I in the lo...

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  13. A conducting bar is pulled with a constant speed v on a smooth conduct...

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  14. The self-inductance L of a solenoid of length l and area of cross-sect...

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  15. A conducting square loop of side l and resistance R is moving out of t...

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  16. A metalic square loop ABCD is moving in its own plane with velocity v ...

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  17. An electric potential difference will be induced between the ends of t...

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  18. A vertical rod of length l is moved with constant velocity v towards e...

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  19. A positive charge q moves along the line AB, which lies in the same pl...

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