Electronic Principles
One henry of inductance is defined as:

the amount of inductance required to change the frequency of a current by 1 Hz
the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second
the amount of counter emf required to reduce a current to 1 A
the number of turns of wire in an inductor multiplied by the amount of current flowing through it
None of these

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Electronic Principles
The total impedance of a parallel RLC circuit:

always decreases as the applied frequency increases
always increases as the applied frequency increases
is maximum at the resonant frequency
is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
None of these

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