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

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

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

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

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

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

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