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Electric Circuits

Electric Circuits
A 10Ω resistor is stretched to increase its length double. Its resistance will now be

 10 Ω.
 5 Ω.
 40 Ω.
 20 Ω.

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Electric Circuits
Four capacitors each of 40 µF are connected in parallel, the equivalent capacitance of the system will be

 160 µF
 40 µF
 10 µF
 5 µF

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Electric Circuits
The ratio of intensity of magnetisation to the magnetising force is known as

 relative permeability.
 susceptibility.
 flux density.
 none of above.

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Electric Circuits
The capacitive reactance of an electric circuit is 50 Ohms. The frequency of supply becomes doubled. What is the new capacitive reactance?

 50 Ohms.
 100 Ohms.
 200 Ohms.
 25 Ohms.

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Electric Circuits
If N is the number of nodes and b is the number of branches in a network, then rank of cut set matrix is

 N - 1.
 N.
 b - N + 1.
 b - N - 1.

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Electric Circuits
A 2m long conductor, carries a current of 50 A at a magnetic field of 100 × 10 − 3 T. The force on the conductor is

 10 N.
 1000 N.
 100 N.
 10000 N.

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MORE MCQ ON Electric Circuits

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