Electric Circuits
Two identical resistors are first connected in parallel then in series. The ratio of resultant resistance of the first combination to the second will be

 4.
 0.25.
 2.
 0.5.

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Electric Circuits
The voltage induced in an inductor is represented as,

 product of its inductance and current through it.
 ratio of current through it to its inductance.
 ratio of its inductance to current through it.
 product of its inductance and rate of change of current through it.

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