Electronic Principles
Which one of the following statements is true for the currents in a parallel RL circuit?

The total current leads the total voltage by less than 90
The total current is less than the sum of the currents through the resistance and inductance
The current always has the same amplitude and phase for every part of the circuit
The total current is equal to the sum of the currents through the resistance and inductance
None of these

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Electronic Principles
When a parallel RLC circuit is operating at its resonant frequency:

the difference between inductive and capacitive reactance is equal to the resistance
inductive reactance is equal to the capacitive reactance
None of these
inductive reactance is greater than the capacitive reactance
capacitive reactance is greater than the inductive reactance

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Electronic Principles
One henry of inductance is defined as:

the number of turns of wire in an inductor multiplied by the amount of current flowing through it
None of these
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

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