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Electric Circuits

Electric Circuits
In active filter which element is absent?

 Capacitor.
 Inductor.
 Resistor.
 Both of above.

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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.
 6 A.
 5 A.
 10 A.

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Electric Circuits
Say A point has an absolute potential of 40 V and point B has an absolute potential of - 10 V, then what will be the value of VBA ?

  30 V.
  none of above.
 50 V.
  - 50 V.

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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

 30A.
 14.14A.
 17.3A .
 22.4A.

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Electric Circuits
Current locus is obtained by which of the following?

 Varying any one of the circuit element
None of these
 Varying source frequency
 Either of these

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Electric Circuits
The capacitive reactance of a capacitor of (1 / 2μF) F at 103 Hz is

 10- 6 μF.
 10 6 μF.
 10 3 μF.
 10- 3 μF.

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