NM CID ES-3 Practice Questions - New Mexico CID ES-3 Low Voltage Special Systems (Under 50 Volts) Examination Exam

Impedance (Z) differs from DC resistance (R) because impedance:

Includes the frequency-dependent effects of inductance and capacitance as well as resistance Is used only on Class 1 circuits Is always smaller than the DC resistance of the same circuit Cannot be measured on audio or data cables

Correct Answer:

Includes the frequency-dependent effects of inductance and capacitance as well as resistance

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