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Electric Circuits

Electric Circuits
200 resistors of 200 Ω each are connected in parallel. Their equivalent resistance will be

 200 Ω.
 1 Ω.
 400 Ω.
 4 kΩ.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The voltage drop across R is

 40.8 V.
 24.4 V .
  50.8 V.
  30.6 V.

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Electric Circuits
Which quantity consists of a unit 1KWh ?

 Charge
 Power
 Time
 Energy

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Electric Circuits
A capacitor has a capacitance of 6 μF. Calculate the stored energy in it if a DC voltage of 100 V, is applied across it?

 2.5 × 102 joules.
 3 × 102 joules.
 4 × 102 joules.
 6 × 102 joules.

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Electric Circuits
The voltage across R and L in a series RL circuit are found to be 200 V and 150 V respectively the rms value of the voltage across the series combination is ______ V.

 200
 450
 250
 360

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Electric Circuits
The mass of a proton is

 1.609 × 10 - 31 Kg.
 1.672 × 10 - 27 Kg.
 1.602 × 10 - 19 Kg.
 1.675 × 10 - 27 Kg.

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