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Electric Circuits

Electric Circuits
How many coulombs of charge flow through a circuit carrying a current of 10 A in 1 minute?

 1200
 60
 600
 10

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Electric Circuits
A capacitor is connected to supply with switch and the switch is connected between capacitor and supply. Initially switch is open at time zero, and then switch is closed. Then how capacitor behaves at time t = 0+?

 open circuit.
 dielectric losses increases.
 dielectric losses decreases.
 short circuit.

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Electric Circuits
One atomic mass unit ( amu ) is approximately equal to

 1.6 × 10-13 Kg.
 1.6 × 10-19 Kg.
  1.6 × 10-27 Kg.
 1.6 × 10-24 Kg.

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Electric Circuits
For same voltage, the ratio resistance of 100 W lamp to resistance of 25 W lamp is

 16.
 1/4.
 4.
 1.

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Electric Circuits
Two 1 kΩ, 1 W resistors are connected in series. Their combine resistance and wattage will be

 2 kΩ, 1 W.
 1 kΩ, 1 W.
 0.5 kΩ, 2 W.
 2 kΩ, 0.5 W.

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Electric Circuits
What is called the frequency in AC operation?

 No. of wave made per second.
 No. of (-) ve quadrature made per second.
 No. of cycles made per second.
 No. of (+) ve quadrature made per second.

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