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A 20 watt, 50 volt filament is connected...

A 20 watt, 50 volt filament is connected in series to an a.c. mains of 250 volt - 50 hertz. Calculate the value of the capacitor required to run the lamp.

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MODERN PUBLICATION-ALTERNATING CURRENTS-EXERCISE
  1. A 20 watt, 50 volt filament is connected in series to an a.c. mains of...

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  2. A lamp is connected in series with a capacitor to a high frequency a.c...

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  3. An air core coil and an electric bulb are connected in series across a...

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  4. Answer the following questions: A choke coil in series with a lamp is ...

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  5. A lamp is connected in series with a capacitor. What will happen if d....

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  6. Explain : voltages across L and C in series are 180^(@) out of phase, ...

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  7. The total impedance of a circuit decreases, when a capacitor is added ...

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  8. When an a.. Circuit with a series combination of inductance, capacitan...

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  9. When a capacitor is connected in series LR circuit the alternating cur...

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  10. An alternating voltage of frequency f is applied across LCR circuit. L...

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  11. An alternating voltage of frequency f is applied across LCR circuit. L...

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  12. Give applications of resonance in series LCR circuit.

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  13. An capacitor C, a variable resistor R and a bulb B are connected in se...

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  14. An capacitor C, a variable resistor R and a bulb B are connected in se...

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  15. A capacitor with capacitance C and a coil with active resistance R and...

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  16. An inductor L of inductance X(L) is connected in series with a bulb B ...

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  17. An inductor L of inductance X(L) is connected in series with a bulb B ...

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  18. As shown in figure an electric lamp having coil of negligible inductan...

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  19. As shown in figure an electric lamp having coil of negligible inductan...

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  20. In the circuit shown below R represents an electric bulb. If the frequ...

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  21. Show in the figure, two electric circuits A and B. Calculate the ratio...

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