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Electric Circuits

Electric Circuits
Consider the following circuit. In this circuit, when Vs = 3 V, I = 4 A, what is the value of I when Vs = 12 V?

 20 A.
 10 A.
 7 A.
 15 A.

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Electric Circuits
Lowest current density is generally recommended for plating of

 silver.
 chromium.
 cadmium.
 bronze.

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Electric Circuits
The greater the internal resistance of a cell

 the greater the terminal voltage.
 the lesser the emf.
 the lesser the terminal voltage.
 the greater the emf.

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Electric Circuits
Reactive power drawn by a pure resistor is

 maximum
None of these
 0
 minimum

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Electric Circuits
KCL works on the principle of which of the following

None of these
 law of conservation of energy.
 law of conservation of charge.
 both.

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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?

 100 Hz.
 1 Hz.
 10 Hz.
 1000 Hz.

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