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Electric Circuits

Electric Circuits
Select the wave that has the least value of form factor.

 Sine wave.
 Rectangular wave.
 Square wave.
 Triangular wave.

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Electric Circuits
What is the relation between time period T and frequency?

 T = 0.5 / frequency.
 T = 1 / frequency.
 T = frequency.
 T = 0.85 / frequency.

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Electric Circuits
A capacitor carries a charge of 0.3 C at 20 V. Its capacitance is

 0.015 F.
 1.5 μF.
 1.5 F.
 15 μF.

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Electric Circuits
The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

 3 / 4 Ω.
 3 / 2 Ω.
 4 / 3 Ω.
 6 Ω.

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Electric Circuits
Which field is associated with the capacitor?

 Both of (A) and (B).
 Magnetic.
 None of above.
 Electric.

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

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

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MORE MCQ ON Electric Circuits

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