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Electric Circuits

Electric Circuits
Time constant of RL series circuit is

 L/R
 2RC
 RC
 2L/R

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Electric Circuits
The energy required to charge a 10 μF capacitor to 100 V is

 10 × 10-9 J.
 0.01 J.
 5 × 10-9 J.
 0.05 J.

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Electric Circuits
A constant current source supplies a electric current of 300 mA to a load of 1 KΩ. When the load changed to 100 Ω, the load current will be

 30 mA.
 3 A.
 300 mA.
 100 mA.

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Electric Circuits
In the above question find the angle between voltage and current?

 90.
 60.
 54.74.
 30.

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Electric Circuits
In series RLC circuit to get Q>1, which of the following is required?

 XL < R
 XL > R
All of these
 XL = R

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Electric Circuits
A 60 Hz frequency voltage would cause a bulb to turn on and off

 120 times per second.
 70 times per second.
 80 times per second.
 60 times per second.

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MORE MCQ ON Electric Circuits

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