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Electric Circuits

Electric Circuits
The internal resistance of a dry cell is of the order of

  2 to 5 Ohm.
  1 to 1.5 Ohm.
  0.2 to 0.4 Ohm.
  1 to 15 Ohm.

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Electric Circuits
Five capacitors each of 5 µF are connected in series, the equivalent capacitance of the system will be

 25 µF
 10 µF
 5 µF
 1 µF

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Electric Circuits
For Norton’s equivalent circuit

 Isc = Voc Req.
 Voc = Req /Isc.
 Isc = Voc / Req.
 Voc = Isc / Req.

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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?

 4 A.
 5 A.
 6 A.
 10 A.

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Electric Circuits
Three resistances have the following ratings 150 Ω at 5 %, 100 Ω at 5 % and 200 Ω at 5 % respectively. The percentage error when all the three are connected in series will be

  + 5 %.
  + 6 %.
 + 7 %.
 + 8 %.

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Electric Circuits
Which of the followings is/are active element?

 Current source
 Voltage source
 None of these.
 Both

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