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Electric Circuits

Electric Circuits
In which of the following oscillations are not present?

 Over damping
 Under damping
 Critical damping
 Both 2 and 3

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Electric Circuits
Which quantity consists of a unit 1KWh ?

 Charge
 Time
 Power
 Energy

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Electric Circuits
Reactive power drawn by a pure resistor is

 0
 minimum
 maximum
None of these

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Electric Circuits
The hot resistance of a tungsten lamp is about 10 times the cold resistance. Accordingly, cold resistance of a 100 W, 200 V lamp will be

 800 Ω.
 400 Ω.
 4 Ω.
  40 Ω.

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Electric Circuits
At which of the following frequency voltage across capacitor has maximum value for series circuit ?

 Equal to resonance frequency
 Less than resonance frequency
 Zero frequency
 Greater than resonance frequency

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Electric Circuits
A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is

 0.5 F
 0.2 F
 0.05 F
 0.02 F

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