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A rectangular coil of 25 turns, area of ...

A rectangular coil of 25 turns, area of `25 cm^2` and resistance of `4 ohm//turn` is placed perpendicular to a varying magnetic field, which changes at the rate of `500 T//s`. The induced current in the coil is

A

0.3125 A

B

0.3225 A

C

31.25A

D

3.225A

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CHETANA PUBLICATION-Electromagnetic Induction-EXERCISE
  1. Dimensional formula of magnetic flux is

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  2. A magnetic field of 2 xx 10^-2Wb//m^2actsat the right angles to a coil...

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  3. A rectangular coil of 25 turns, area of 25 cm^2 and resistance of 4 oh...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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