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Electric Circuits

Electric Circuits
Absolute permittivity of dielectric medium is represented as

 εr/ε0
 ε0
 εr
 εrε0

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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 ?

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

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Electric Circuits
A capacitor passes a current of 12.6 mA when supplied with 20 V ac with a frequency of 1000 Hz. The capacitance will be

 1 μF.
 0.1 μF.
 0.001 μF.
 0.01 μF.

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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
Which of the following represents the resonance frequency (ω0) with respect to lower cutoff frequency (ω1) and higher cutoff frequency (ω2)

 ω1 - ω2
 ω1 / ω2
 ω1 + ω2
 √(ω1² + ω2²)

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Electric Circuits
A current is said to be alternating when it changes in

 magnitude.
 direction.
 none of these.
 both ‘a’ and ‘b’.

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MORE MCQ ON Electric Circuits

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