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What is virtual ampere? Deduce the relat...

What is virtual ampere? Deduce the relation `I_(mns)=I_0/sqrt2`

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BINA LIBRARY-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT-EXERCISE
  1. Find the expression for mutual inductance between a pair of co-axial c...

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  2. Briefly explain the working of A.C. generator.

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  3. What is virtual ampere? Deduce the relation I(mns)=I0/sqrt2

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  4. Prove that average power consumed in an ac circuit is P(av) =I(mns)* V...

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  5. A coil of area A, number of turns N and resistance R is rotating in a ...

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  6. The equation of an alternating voltage is V=100sin100πt volt. Find the...

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  7. If the rms current through a 6.8kΩ resistor is 8mA, Find the rms volta...

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  8. What is the advantage of using a transformer for long distance transmi...

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  9. State the working principle of a transformer. What is hysteresis loss ...

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  10. A cylindrical bar magnet is kept along the axis of a circular coil. Wi...

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  11. Why do birds fly off high tension when current is switched on?

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  12. What is an amplitude ?

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  13. Why are coils in resistance box double wounded?

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  14. Why is spark produced in the switch off a fan when it is put off?

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  15. A copper disc is allowed to swing through the two poles of a U-shaped ...

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  16. A light bulb is rated at 100W for a 220V supply. Find the peak voltage...

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  17. A light bulb is rated at 100W for a 220V ac supply. Calculate the resi...

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  18. A sinusoidal voltage V=200 sin 314t is applied to a resistor of 10 Ome...

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  19. A lamp is connected in series with a capacitor. Predict your observati...

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  20. Explain the principle on which the metal detector is used in airport f...

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