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Electric Circuits

Electric Circuits
What is Va in the below circuit?

 (4R + 10) / 3.
 (6R - 10) / 3.
 (6R + 10) / 3.
 (3R + 10) / 3.

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Electric Circuits
What is the real power in AC operation?

 VIcosφ.
 None of these.
 Both option A and B.
 Apperant power × cosφ.

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Electric Circuits
The greater the internal resistance of a cell

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

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Electric Circuits
The value of E within the field due to a point charge can be found with help of

 Faradays law.
 Kirchhoffs law.
 Coulombs law.
 Lenzs law.

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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?

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

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Electric Circuits
For same voltage, the ratio resistance of 100 W lamp to resistance of 25 W lamp is

 1/4.
 16.
 4.
 1.

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MORE MCQ ON Electric Circuits

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