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Electric Circuits

Electric Circuits
The rms value of sine wave is 100 A. Its peak value is

 141.4 A.
 150 A.
 70.7 A.
 282.8 A.

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Electric Circuits
If two point charges are denoted by + Q and - Q and distance between this charges is d, then the dipole moment P equal to

  Q2 / d.
  Q × d.
  Q / d2.
  Q2 × d.

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Electric Circuits
The equation for 25 cycles current sine wave having rms value of 30 amps, will be

 30sin50πt.
 42.4sin25πt.
 30sin25πt.
 42.4sin50πt.

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Electric Circuits
Which of following is the unit of magnetic flux density?

 Lumens.
 Tesla.
 Weber.
 Daraf.

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Electric Circuits
What will be the capacitance when distance between the 2 plates of a condenser of capacitance 8 micro farad is reduced from 10 mm to 4 mm?

 20 microfarad.
 1 microfarad.
 8 microfarad.
 3.2 microfarad.

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Electric Circuits
Average power taken by the pure capacitor is

 Zero
 Minimum
 Maximum
 Any of the above

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MORE MCQ ON Electric Circuits

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