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Electric Circuits

Electric Circuits
A capacitor that stores charge of 0.5 C at 10 V has a capacitance of _____________ farad.

 0.05.
 10.
 5.
 20.

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Electric Circuits
The time required for a pulse to change from 10 % to 90 % of its maximum value is known as

 decay time.
 rise time.
 run time.
 fall time.

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Electric Circuits
Which quantity consists of a unit 1KWh ?

 Time
 Charge
 Power
 Energy

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Electric Circuits
Condition of symmetry in Z-parameter representation is

 Z11 = Z12.
 Z11 = Z22.
 Z12 = Z22.
 Z12 = Z21.

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Electric Circuits
Which of the following has no units?

 Permittivity
 Permeability
 Moment of a magnet
 Magnetic susceptibility

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Electric Circuits
An AC voltage of 200 V at 50 Hz is applied to a coil which draws 5 A and dissipates 1000 W. The resistance and impedance of the coil respectively are

 40 Ω and 200 Ω.
 25 Ω and 5 Ω.
 50 Ω and 200 Ω.
 40 Ω and 40 Ω.

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