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Electric Circuits

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

 5 Ω.
 40 Ω.
 20 Ω.
 10 Ω.

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Electric Circuits
The ratio of electric flux density to electric field intensity is called ......... of medium

 capacitance
 permeability
 permittivity
 reluctance

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Electric Circuits
The capacitance of a parallel plate capacitor can be varied by

All of these
 changing the distance between the plates only.
 changing the dielectric medium only.
 changing the overlapping area of the plates only.

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Electric Circuits
There are two capacitors C1 and C2 in parallel , what will be their equivalent capacitance?

 (C1C2) / C1 + C2.
 C1C2.
 C1 + C2.
 (C1 + C2) / C1C2.

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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

 17.3A .
 14.14A.
 30A.
 22.4A.

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Electric Circuits
Millman theorem yields equivalent

 both ‘c’ and ‘d’ .
 impedance.
 voltage source.
 current source.

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MORE MCQ ON Electric Circuits

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