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In a transformer, energy is transferred ...

In a transformer, energy is transferred from the primary to the secondary by

A

the current in the wires

B

an electric field

C

magnetic field

D

P.D. across the primary

Text Solution

Verified by Experts

The correct Answer is:
C
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BINA LIBRARY-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT-EXERCISE
  1. The mutual inductance of an induction coil is 5H. In the primary coil ...

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  2. A coil of wire of radius r has 600 turns and a self inductance of 108 ...

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  3. The average power dissipation in a pure capacitor in ac circuit is

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  4. The average power dissipation on a pure inductor L in an ac circuit is

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  5. An oscillator circuit consists of an inductance of 0.5 mH and capacito...

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  6. A transformer has 2100 tums in primary and 4200 turns in secondary. An...

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  7. A dynamo acts as a

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  8. Lenz's law is a consequence of the law of conservation of

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  9. The phenomenon of electromagnetic induction was discovered by

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  10. If an aC ammeter reads I ampere in an aC circuit, the peak value of th...

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  11. In a transformer, energy is transferred from the primary to the second...

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  12. An electron enters a region with uniform velocity and it moves in the ...

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  13. An electron of charge e enters a magnetic field B with a velocity v an...

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  14. A charged particle moves at right angles to a uniform magnetic field a...

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  15. Energy dissipates in LCR circuit in

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  16. The working of a dynamo is based on the principle of

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  17. The average power dissipation on a pure inductor L in an ac circuit is

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  18. A capacitor of capacity C has reactance X. If the capacitance and freq...

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  19. When current changes from + 2A to -2A in 0.05 S, an emf of 8V is induc...

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  20. Which of the following quantities remain constant in a step down trans...

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