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Electric Circuits

Electric Circuits
Which of the following are the passive elements?

 None of these.
 Both
 Bulb
 Resistor

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Electric Circuits
In RLC parallel circuit current through resistor, inductor and capacitor are 10A, 5A and 5A respectively. What is the total current in the circuit?

 10A
 0A
 20A
 5A

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Electric Circuits
The unit of resistivity is

 Ω - metre.
 Ω.
 Ω / metre.
 Ω / m².

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Electric Circuits
The capacitive reactance of an electric circuit is 50 Ohms. The frequency of supply becomes doubled. What is the new capacitive reactance?

 100 Ohms.
 25 Ohms.
 200 Ohms.
 50 Ohms.

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Electric Circuits
In what connection we get neutral?

  Star.
  Both A and B.
  Delta.
  Mesh.

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Electric Circuits
Two battery having unequal emf

 cannot be connected in parallel.
 cannot be connected in series.
 can be connected in series only.
 both a and d

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