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

The total current is less than the sum of the currents through the resistance and inductance
None of these
The total current leads the total voltage by less than 90
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

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Electronic Principles
Which one of the following phrases most accurately describes a purely inductive circuit?

None of these
Resistances provide the only opposition to current flow
Combinations of resistance and inductive reactance provide any opposition to current flow
The ac voltage lags the current by 90 degree
Inductive reactance provides the only opposition to current flow

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Electronic Principles
The total capacitive reactance of a parallel capacitor circuit is:

None of these
equal to the sum of the individual capacitance values
equal to the sum of the individual capacitive-reactance values
equal to the source voltage divided by total current
less than the capacitance value of the smallest capacitor

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Electronic Principles
One henry of inductance is defined as:

None of these
the number of turns of wire in an inductor multiplied by the amount of current flowing through it
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 inductance required to change the frequency of a current by 1 Hz
the amount of counter emf required to reduce a current to 1 A

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