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Electric Circuits

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

 4msec
 100sec
 1msec
 2msec

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Electric Circuits
2) Two sinusoidal emfs are given as e1 = Asin(wt+45) and e2 = Bsin(wt-30). The phase difference between the two quantities in degrees is

 60.
 15.
 105.
 75.

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Electric Circuits
Among the options which metal has the highest electrical conductivity?

 Aluminium.
 Stranded aluminium.
 Steel.
 Copper.

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Electric Circuits
A 35 V source is connected to a series circuit of 600 Ω and R as shown. If a voltmeter of internal resistance 1.2 kΩ is connected across 600 Ω resistor, it reads 5 V. The value of R is

 7.2 k Ω.
 2.4 k Ω.
 1.2 k Ω.
 3.6 k Ω.

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Electric Circuits
The resistance of 100 W, 200 V lamp is

 200 Ω.
 1600 Ω.
 400 Ω.
 800 Ω.

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Electric Circuits
Which of the following elements is/are called dynamic element/s?

 C.
 R.
 Both L and C.
 L.

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MORE MCQ ON Electric Circuits

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