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Electric Circuits

Electric Circuits
In which of the circuits power factor can be zero?

 inductive.
 both ‘a’ and ‘b’
 resistive.
 capacitive.

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Electric Circuits
In series RLC circuit to get Q>1, which of the following is required?

All of these
 XL < R
 XL > R
 XL = R

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Electric Circuits
A 100 ohm resistor is directly connected across a 80 V battery. What is the power dissipation?

 5 W.
 1 W.
  64 W.
 10 W.

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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 / 2 Ω.
 3 / 4 Ω.
 4 / 3 Ω.
 6 Ω.

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Electric Circuits
A 10 Ohm resistor has power rating of 1W. Find the maximum current rating.

 0.1 A.
 0.01 A.
 1 A.
 0.316 A.

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Electric Circuits
Which of following is not a vector?

 Linear momentum.
 Angular momentum.
 Electric field.
 Electric potential.

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MORE MCQ ON Electric Circuits

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