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Electric Circuits

Electric Circuits
Which property is used to oppose the flow of current ?

 Resistance
 Poteintial difference
 Inductance
 Capacitance

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Electric Circuits
A parallel plate capacitor with air as dielectric, force between plate is F. If capacitor is now immersed water of dielectric εr, force between plate will be –

 F.
 F εr.
 0.
 εr/F.

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Electric Circuits
Which of the followings is/are active element?

 Voltage source
 Current source
 None of these.
 Both

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Electric Circuits
For the circuit shown below the value of R is adjusted so as to make the current in RL equal to zero. Calculate the value of R.

 4 Ω.
 2 Ω.
 3 Ω.
 1 Ω.

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Electric Circuits
In RLC series circuit, if the voltage across capacitor is greater than voltage across inductor, then power factor of the network is

 leading.
 zero.
 unity.
 lagging.

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Electric Circuits
The value of current I flowing in the 1 Ω resistor in the circuit shown in the given figure will be

 5 A.
 6 A.
 0 A.
 10 A.

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MORE MCQ ON Electric Circuits

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