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Electric Circuits

Electric Circuits
Which of the following may be value of resistivity of copper?

 1.7 X 10 - 3.
 1.7 X 10 - 5.
 1.7 X 10 - 4.
 1.7 X 10 - 6.

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Electric Circuits
A wire 2.5 m long is bent into a square. An current of 100 A flowing through the wire will produce a magnetizing force at the center of the square, equal to

 144 AT / m.
 72 AT / m.
 222 AT / m.
 196 AT / m.

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Electric Circuits
In the circuit shown below, what is the voltage across 5 Ω resistor?

 -27.4 V.
 None of them
 -28.4 V.
 34.4 V.

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Electric Circuits
The capacitance of a conductor is varying from 2 microfarad to zero in 1 sec linearly if the voltage applied to it is 6 V the energy stored in 0.5 sec in the condenser is

  55.1 µ joules.
 20 µ joules.
 18 µ joules.
 10 µ joules.

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Electric Circuits
If a resistor and an inductor are connected in series across a voltage source. Which two parameters in that circuit decrease if frequency of voltage source increases?

 VR and I.
 Z and I.
 VL and Z.
 VL and VR.

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Electric Circuits
By which of the following elements transients will not occur?

 C
 L
All of these
 R

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