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Electric Circuits

Electric Circuits
Kirchhoff's second law is based on law of conservation of

 mass.
 momentum.
 charge.
 energy.

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Electric Circuits
The arrangement of 12 cells each of internal resistance 1.5 Ohm to give maximum current in external load resistance of 2 Ohm will be

 in 4 parallel rows each row having 3 cells in series.
 all 12 in series.
 in 3 parallel rows each row having 4 cells in series.
 all 12 in parallel.

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Electric Circuits
In the circuit shown in figure if I1 = 1.5 A, then I2 will be

 0.5 A.
 1 A.
 2 A.
 1.5 A.

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Electric Circuits
Two 1 kΩ, 1 W resistors are connected in series. Their combine resistance and wattage will be

 2 kΩ, 0.5 W.
 2 kΩ, 1 W.
 0.5 kΩ, 2 W.
 1 kΩ, 1 W.

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Electric Circuits
The resistivity of semi-conductors at room temperatures is

 109 to 1012 ohm - cm.
 1.6 × 106 to 100 × 106 ohm - cm.
 0.01 to 50 ohm - cm.
 1000 to 1500 ohm - cm.

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Electric Circuits
If C be the capacitance, V be the potential difference and I be the current, then I / CV will have the unit of

 reactive power.
 frequency.
 time.
 power.

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MORE MCQ ON Electric Circuits

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