A complex number represents a phasor quantity.

More Questions from RC Circuits

• The impedance of a series RC circuit varies directly with frequency.
• In a lag network, the output voltage lags the input voltage in phase.
• The resistor voltage is always out of phase with the current.
• Apparent power is expressed in watts.
• A filter passes all frequencies.
• In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.
• An imaginary number is one that exists only in the mind of the mathematician.
• Total current in an RC circuit always leads the source voltage.
• The polar form of a complex number consists of a real part and a j part.
• The circuit phase angle is the angle between the total current and the applied (source) voltage.

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