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Electric Circuits

Electric Circuits
Under resonance condition the phase angle between voltage phase and current phase is

 45°
 90°
 - 90°
 0°

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Electric Circuits
Four bulbs of 40 W each are connected in series with a battery across them, which of the following statement is true?

 The current through each bulb is same.
None of these
 The voltage across each bulb is not same.
 The power dissipation in each bulb is not same.

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Electric Circuits
Under resonance condition the power factor of a system is

 lagging
 any of the above
 leading
 unity

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Electric Circuits
The resistivity of semi-conductors at room temperatures is

 1.6 × 106 to 100 × 106 ohm - cm.
 1000 to 1500 ohm - cm.
 0.01 to 50 ohm - cm.
 109 to 1012 ohm - cm.

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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 μsec
 4 msec
 2 msec
 2 μsec

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Electric Circuits
The current through the 2 KΩ resistance ( rest resitances are all 1 ohm each ) in the circuit shown in diagram

 1 mA.
 2 mA.
 0 mA.
 6 mA.

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MORE MCQ ON Electric Circuits

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