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A rod of length l is rotated about its o...

A rod of length l is rotated about its one end, perpendicular to a magnetic field of induction B What is the e.m.f induced in the rod

A

`B l^2 omega`

B

`0.5 B l^2 omega`

C

`B l omega`

D

`0.5 B l omega`

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CHETANA PUBLICATION-Electromagnetic Induction-EXERCISE
  1. A rectangular coil of 25 turns, area of 25 cm^2 and resistance of 4 oh...

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  2. The magnetic flux in a coil is phi = 4t^2 + 4t + 4. What is the magnit...

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  3. A rod of length l is rotated about its one end, perpendicular to a mag...

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  4. A conducting circular loop is placed in a uniform magnetic field B = 0...

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  5. A 100 mH coil carries 1 A current .Energy stored in its magnetic field...

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  6. The current in a coil changes from 0 to 20 A in 0.5S. If the induced e...

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  7. Which one of the following is the unit of self inductance of a coil?

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  8. If L is the inductance and R is the resistance, then the unit of -L/R ...

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

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  10. Which one of the following units denotes the dimensions ML^2//Q^2, whe...

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  11. What is the dimensional formula for the coefficient of self induction?

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  12. A coil is wound on a frame of rectangular crosssection. If all the lin...

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  13. A metal plate is getting heated. It can be because Which is the wrong ...

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  14. In a step up transformer, the input voltage is 300 V and the output vo...

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  15. A step down transformer works on 220 volts a.c. mains. It is used to l...

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  16. A transformer has 250 volts applied to the primary and gives 4.6V in t...

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  17. The number of turns in the primary and secondary coils of a transforme...

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  18. In relation to a transformer, the relation np/ns= 20, indicate that

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  19. In an ideal transformer, the number of turns in the primary is 120 and...

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  20. A transformer is used to reduce the mains supplyof 220V to 22V.If the ...

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