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Electric Circuits

Electric Circuits
The ratio of the resistance of a 200 W, 230 V lamp to that of a 100 W, 115 V lamp will be

 4.
 0.25.
  2.
  0.5.

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Electric Circuits
What is the real power in AC operation?

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

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Electric Circuits
Which of the following is not equivalent to watts?

 Ampere-volts.
 Joules per second.
 Ampere2 – Ohm.
 Amperes/volt.

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Electric Circuits
In which of the following networks it is not possible to find the transient free response?

 RL
 RL, RC, and RLC
 RC
 RLC

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Electric Circuits
One atomic mass unit ( amu ) is approximately equal to

  1.6 × 10-27 Kg.
 1.6 × 10-13 Kg.
 1.6 × 10-24 Kg.
 1.6 × 10-19 Kg.

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Electric Circuits
A wire of 0.14 mm diameter and specific resistance 9.6 Ω - cm is 440 cm long. The resistance of the wire will be

 11.3 Ω.
 13.7 Ω.
 9.6 Ω.
 27.4 Ω.

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