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Electric Circuits

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

 Any of above.
 Albumen.
 Gelatine.
 Glucose.

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Electric Circuits
In a lead acid cell, hydrogen is liberated at

 negative plate.
 positive plate.
 none of the plates.
 both plates.

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Electric Circuits
A variable capacitance is one whose capacitance

 can be changed manually or by mechanical force.
 changes with time.
 changes with temperature.
 changes with voltage.

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Electric Circuits
A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the value of C?

 8.51 µF.
 10.54 µF.
 4.78 µF.
 1.8 µF.

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Electric Circuits
In the network shown, what is the current I in the direction shown?

 4 A.
 0 A.
 5 / 6 A.
 1 / 3 A.

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Electric Circuits
Total power consumed in the circuit below is 10 W. Find X.

 1 A.
 3 A.
 None of these.
  2 A.

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