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Electric Circuits

Electric Circuits
In the circuit shown below if I = 2 A then find V?

 5 V.
 1 V.
 2 V.
 3 V.

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Electric Circuits
Internal resistance of ideal voltage source is

 finite
 100 ohms
 zero
 infinite

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Electric Circuits
Three resistors of 4 ohm, 6 ohm and 8 ohm are in parallel. In which resistor, power dissipation will be maximum

 6 Ohm.
 4 Ohm.
 8 Ohm.
 equal in all resistors.

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

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

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Electric Circuits
Which of following is invariably seen in an electroplating plant?

  Carbon brushes.
  Barrel.
  Rectifier.
  Distilled water.

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Electric Circuits
A current of 4 A flows in an ac circuit when 100 V dc is applied to it whereas it takes 250 v ac to produce the same current the power factor of the circuit is

 1.
 10.
 0.4.
 0.85.

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