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Electric Circuits

Electric Circuits
The average value of half wave rectified sinusoidal current waveform, whose maximum value is 1A is

 1 A.
 0.5 A.
 0.637 A.
 0.318 A.

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Electric Circuits
Our household apparatus are connected in

 cascade.
 parallel.
 series and parallel combination.
 series.

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Electric Circuits
A parallel plate capacitor has a capacitance of C farad. It area of the plates is doubled and the distance between them is half, the capacitance of the capacitor is

 4C Farad.
 2C Farad.
 16C Farad.
 C Farad.

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Electric Circuits
Open circuit voltage of a fully charged lead acid cell is

 2 V.
 1.9 V.
 2.5 V.
 2.7 V.

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Electric Circuits
Which of the following has least resistivity?

 Copper.
 Lead.
 Aluminium.
 Mercury.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The current in R is

 10.16 A.
 1.27 A.
 5.08 A.
 2.54 A.

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MORE MCQ ON Electric Circuits

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