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Electric Circuits

Electric Circuits
The strength of current in 1 H inductor changes at rate of 1 A / sec. Find the voltage across it?

 2 V.
 None of these.
 1 V.
 0.5 V.

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Electric Circuits
The efficiency in case of maximum power transfer theorem is

 less than 50 %.
 100 %.
 50 %.
 50 % - 100 %.

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Electric Circuits
For the circuit given in the figure the power delivered by the 2 V source is given by

 - 4 W.
 4 W.
 - 2 W.
 2 W.

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Electric Circuits
Which of the following is not equivalent to watts?

 Amperes/volt.
 Ampere2 – Ohm.
 Joules per second.
 Ampere-volts.

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Electric Circuits
The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be

 4R Ω
 R Ω
 8R Ω
 2R Ω

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Electric Circuits
In delta connected circuit when one resistor is open, then power will be

 increased by factor of 3.
 0.
 reduced by the factor of 3.
  remain unchanged.

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MORE MCQ ON Electric Circuits

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