Electronic Principles
The total impedance of a parallel RLC circuit:

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

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

None of these
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

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

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

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