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Electric Circuits

Electric Circuits
Two sinusoidal quantities are said to be in phase quadrature, when their phase difference is

 45o.
 30o.
 0o.
 90o.

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Electric Circuits
A 50 μF capacitor is charged to retain 10 MJ of energy by a constant charging current of 1 A. Determine the voltages across the capacitor?

 60 V.
 20 V.
 50 V.
 30 V.

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Electric Circuits
Which of the followings is the expression for energy stored in a capacitor?

 C dv / dt.
 C / v.
 Cv.
 (1 / 2) Cv2.

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Electric Circuits
The term trickle charge is associated with

 silver zinc battery.
 nickel iron battery.
 lead acid battery.
 dry cell.

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Electric Circuits
The maximum current rating for a 10 k Ω, 0.5 W resistor is

 14.14 mA.
 0.707 mA.
 28.28 mA.
 7.07 mA.

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Electric Circuits
In RL series circuit R=2Ω and L=2mH. What is the value of time constant?

 1msec
 4msec
 2msec
 100sec

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MORE MCQ ON Electric Circuits

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