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Electric Circuits

Electric Circuits
For the network shown below when I = 0, V = 20 V and when R = 0, I = 10 A. If now R = 3 Ω what is the value of the current I?

 10 A.
 5 A.
 4 A.
 6 A.

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Electric Circuits
A circuit contains two unequal resistor in parallel

 voltage drops across both are same.
 voltage drops are according to their resistive value.
 currents in both are same.
 heat losses in both are same.

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Electric Circuits
In RLC series circuit, at resonance condition the value of current is

 Minimum
None of these
 Zero
 Maximum

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Electric Circuits
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of heater will

  none of these.
  remain constant.
  decrease.
  increase.

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Electric Circuits
Which of the following has positive temperature coefficient ?

  Germanium.
  Paper.
  Gold.
  Rubber.

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Electric Circuits
Which of the followings is the expression for energy stored in a capacitor?

 C dv / dt.
 (1 / 2) Cv2.
 Cv.
 C / v.

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