Electric Circuits
If a resistor is connected across the voltage source and the frequency of voltage and current wave form is 50Hz, then what is frequency of instantaneous power

 0 Hz.
 100 Hz.
 50 Hz.
 150 Hz.

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

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

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