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Electric Circuits

Electric Circuits
A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is

 0.02 F
 0.5 F
 0.05 F
 0.2 F

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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.
 f0 / 2.
 2f0.
 still f0.

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Electric Circuits
The value of E within the field due to a point charge can be found with help of

 Faradays law.
 Kirchhoffs law.
 Lenzs law.
 Coulombs law.

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Electric Circuits
Four bulbs of 40 W each are connected in series with a battery across them, which of the following statement is true?

 The voltage across each bulb is not same.
 The power dissipation in each bulb is not same.
None of these
 The current through each bulb is same.

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Electric Circuits
The equation for 25 cycles current sine wave having rms value of 30 amps, will be

 30sin25πt.
 42.4sin25πt.
 30sin50πt.
 42.4sin50πt.

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Electric Circuits
Electric flux is proportional to

 potential difference between electrodes.
 resistivity of medium.
 rate of change of current.
 rate of change of potential difference.

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MORE MCQ ON Electric Circuits

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