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Electric Circuits

Electric Circuits
What is the mass number of an element that has 19 protons, 19 electrons, and 20 neutrons?

 38.
 20.
 39.
 19.

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Electric Circuits
If the measured value of a capacitor is 205.3µF and true value is 201.4µF the percentage relative error is

 25.64%
 1.94%
 1.89%
 39.00%

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

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

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Electric Circuits
In RL series circuit R=2Ω and L=10mH and applied voltage is 10V DC. Then find the current in the network?

 10A
 5A
 1A
 0A

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Electric Circuits
Energy efficiency during electroplating is usually in the range

 80 to 85%.
 85 to 90%.
 90 to 99%.
 50 to 80%.

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Electric Circuits
Consider the following circuit. In this circuit, when Vs = 3 V, I = 4 A, what is the value of I when Vs = 12 V?

 7 A.
 10 A.
 15 A.
 20 A.

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MORE MCQ ON Electric Circuits

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