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Electric Circuits

Electric Circuits
The energy required to charge a 10 μF capacitor to 100 V is

 10 × 10-9 J.
 0.05 J.
 0.01 J.
 5 × 10-9 J.

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Electric Circuits
The coils having self inductor of 10 mH and 15 mH have an effective inductor of 40 mH, when connected in series aiding. What will be the equivalent inductor if we connect them in series opposing

 0 mH.
 10 mH.
 20 mH.
 5 mH.

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Electric Circuits
Which of the following quantities remain the same in all parts of a parallel circuit

 current.
 resistance.
 power.
 voltage.

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Electric Circuits
A delta connection contains three equal impedance of 60 Ω. The impedance of the equivalent star connection for each star load will be

 30 Ω.
 15 Ω.
 40 Ω.
 20 Ω.

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Electric Circuits
A 10 μF capacitor and 100 W, 220 V lamp is connected in series across a 220 V alternating supply. In which frequency of the supply the lamp will glow brightest?

 10 Hz.
 1 Hz.
 1000 Hz.
 100 Hz.

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Electric Circuits
Which of the following substance when added to electrolyte promotes smooth deposition?

 Glucose.
 Albumen.
 Any of above.
 Gelatine.

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MORE MCQ ON Electric Circuits

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