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Electric Circuits

Electric Circuits
In the above question find the angle between voltage and current?

 54.74.
 30.
 60.
 90.

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Electric Circuits
Five capacitors each of 5 µF are connected in series, the equivalent capacitance of the system will be

 10 µF
 5 µF
 25 µF
 1 µF

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Electric Circuits
Which of following is not a vector?

 Angular momentum.
 Electric field.
 Linear momentum.
 Electric potential.

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Electric Circuits
A coil with negligible resistance has 50 V across it with 10 mA. The inductive reactance is

 1000 ohms.
 500 ohms.
 50 ohms.
 5000 ohms.

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Electric Circuits
The electron is lighter than a proton by a factor of about

 18400.
 184.
 1840.
 18.4.

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Electric Circuits
A circuit with resistor, inductor, capacitor in series is resonant of 50 Hz. If all the values are now doubled, the new resonant frequency is

 f0 / 4.
 2f0.
 f0 / 2.
 still f0.

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