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Electric Circuits

Electric Circuits
In RLC series circuit R = 2Ω, L = 2mH and C = 1μF. Find the time constant of the circuit?

 2 μsec
 4 msec
 1 μsec
 2 msec

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Electric Circuits
Poorest conductor of electricity is

  Steel.
  Silver.
  Aluminium.
  Carbon.

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Electric Circuits
Say A point has an absolute potential of 40 V and point B has an absolute potential of - 10 V, then what will be the value of VBA ?

  none of above.
 50 V.
  - 50 V.
  30 V.

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Electric Circuits
In above question, if circuit efficiency is 90 %. What will be output power ?

  37.3 kW.
  40 kW.
  35.6 kW.
  30 kW.

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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

 27.4 Ω.
 11.3 Ω.
 13.7 Ω.
 9.6 Ω.

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Electric Circuits
A 10 μF capacitor and 100 W, 220 V lamp is connected in series across a 220 V alternating supply. In which frequency of the supply the lamp will glow brightest?

 100 Hz.
 1000 Hz.
 10 Hz.
 1 Hz.

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MORE MCQ ON Electric Circuits

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