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Electric Circuits

Electric Circuits
In which of the circuits power factor can be zero?

 both ‘a’ and ‘b’
 inductive.
 capacitive.
 resistive.

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Electric Circuits
The energy stored by a capacitor is given by

 1/2 QV.
 1/2 CV2.
 all of them.
 Q2 / 2C.

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Electric Circuits
The mass of a neutron of atom is

 1.672 × 10 - 26 Kg.
 1.609 × 10 - 31 Kg.
 1.675 × 10 - 27 Kg.
 1.602 × 10 - 19 Kg.

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Electric Circuits
A constant current source supplies a electric current of 300 mA to a load of 1 KΩ. When the load changed to 100 Ω, the load current will be

 3 A.
 300 mA.
 100 mA.
 30 mA.

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Electric Circuits
A capacitor having a capacitance of 40 μF is connected across 250 V DC source. The charging current will be least

 when capacitor is half charged.
 initially.
 when capacitor is almost 25% charged.
 when capacitor is fully charged.

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Electric Circuits
Which of the following can not be connected in series unless they are identical?

 Resistance.
 Current source.
 Voltage source.
 Both of above.

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MORE MCQ ON Electric Circuits

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