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Electric Circuits

Electric Circuits
The resistance of 100 W, 200 V lamp is

 1600 Ω.
 400 Ω.
 200 Ω.
 800 Ω.

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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?

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

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Electric Circuits
Consider the following circuit : Switch is closed at t = 0 Find i(0 +)

 V/R.
 0.
 (V*L) / (R*C)
 V / {R + (sL + 1 / Cs)}.

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

 60
 1200
 10
 600

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Electric Circuits
Power factor can be defined as

 sine of voltage and current.
 both option B and C.
 cosine of angle between voltage and current.
 ratio of resistance versus impedance.

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Electric Circuits
In RLC parallel network R = 2 Ohm, L = 2mH and C = 1μF. Find the value of time constant?

 4 msec
 2 μsec
 4 μsec
 2 msec

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