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Electric Circuits

Electric Circuits
Which of the following defined the average value ?

 Current
 Heating effect
 Charge transfer
 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 current in the circuit?

 0.1465 A.
 0.2547 A.
 0.1578 A.
 0.4583 A.

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Electric Circuits
The form factor of sinusoidal alternating current is

 1.15.
 0.
 1.
 1.11.

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Electric Circuits
Two point charges of 4μC are placed at a distance of 3 cm apart from each other in free space. Force acting on two charges will be

 160 N
 400 N
 100 N
 0.02 N

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Electric Circuits
Voltage magnification will occur in which of the following case?

 Series resonance
 Both
None of these
 Parallel resonance

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Electric Circuits
Two wires of A and B of the same material and length ‘l’ and ‘2l’ have radius ‘r’ and ‘2r’ respectively. The ratio of their specific resistance will be

 1:1.
 4:1.
 1:8.
 1:2.

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