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Electric Circuits

Electric Circuits
For steady state current inductor acts as

 Voltage source
 Short circuit
 Open circuit
 Current source

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Electric Circuits
Five cells are connected in series in a row and then four such rows are connected in parallel to Feed the current to a resistive load of 1.25Ω. Each cell has an emf of 1.5 V with internal resistance Of 0.2Ω. The current through the load will be

 23.33 A
 5 A
 1 A
 3.33 A

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Electric Circuits
Specific resistance is measured in

  ohm.
  ohm/cm.
  ohm - cm.
  mho.

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Electric Circuits
The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

 3 / 2 Ω.
 3 / 4 Ω.
 6 Ω.
 4 / 3 Ω.

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Electric Circuits
In the given figure, the Thevenins equivalent voltage and impedance as seen from the terminals P - Q is given by

 2 V and 5 Ω.
 4 V and 7.5 Ω.
 4 V and 5 Ω.
 2 V and 7.5 Ω.

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Electric Circuits
The rms value of the resultant current in a wire which carries a DC current of 10A and a sinusoidal current of peak value 20A is

 17.3A .
 22.4A.
 30A.
 14.14A.

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MORE MCQ ON Electric Circuits

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