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Electric Circuits

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.
 3 Ω.
 2 Ω.
 1 Ω.

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Electric Circuits
A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is

 0.05 F
 0.2 F
 0.5 F
 0.02 F

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Electric Circuits
Three element having conductance G1, G2 and G3 are connected in parallel. Their combined conductance will be

 G1 + G2 + G3.
 (1 / G1 + 1 / G2 + 1 / G3) - 1.
 (G1 + G2 + G3) - 1.
 1 / G1 + 1 / G2 + 1 / G3.

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Electric Circuits
A branch of a network is said to be passive when it contains

 voltage source.
 battery.
 current source.
 voltmeter.

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Electric Circuits
A paper capacitor is usually available in form of

 tubes.
 rolled foil.
 meshed plates.
 disc.

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Electric Circuits
A capacitor carries a charge of 0.3 C at 20 V. Its capacitance is

 0.015 F.
 15 μF.
 1.5 μF.
 1.5 F.

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