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Electric Circuits

Electric Circuits
What will be the resistance if 10 resistors of 10 ohm each are connected in series?

 0.1 Ω.
 100 Ω.
 10 Ω.
 1 Ω.

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Electric Circuits
A capacitor passes a current of 12.6 mA when supplied with 20 V ac with a frequency of 1000 Hz. The capacitance will be

 0.01 μF.
 0.1 μF.
 0.001 μF.
 1 μF.

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Electric Circuits
A variable capacitance is one whose capacitance

 can be changed manually or by mechanical force.
 changes with temperature.
 changes with voltage.
 changes with time.

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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
In active filter which element is absent?

 Resistor.
 Capacitor.
 Both of above.
 Inductor.

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Electric Circuits
Condition for reciprocity in case of ABCD parameters is

 AB-CD = 1.
 AD-BC = 1 .
  AB-CD = 0.
 AD-BC = 0.

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