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Electric Circuits

Electric Circuits
2) Two sinusoidal emfs are given as e1 = Asin(wt+45) and e2 = Bsin(wt-30). The phase difference between the two quantities in degrees is

 105.
 60.
 75.
 15.

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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
 100 N
 0.02 N
 400 N

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Electric Circuits
In RLC series circuit, if the voltage across capacitor is greater than voltage across inductor, then power factor of the network is

 zero.
 leading.
 unity.
 lagging.

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Electric Circuits
Active filter consists of

 inductor.
 op-amp.
 op-amp and capacitor.
 capacitor.

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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.
 0.4583 A.
 0.2547 A.
 0.1578 A.

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Electric Circuits
Which of the following quantities consists of SI unit as WATT ?

 Power
 Current
 Charge
 Force

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