The SI unit of reactance is:
Correct answer: A. ohm
- A. ohm
- B. Volt-m
- C. Ampere
- D. Volt
Explanation
The correct option, ohm (Ω), represents the SI unit of reactance. Reactance, whether capacitive or inductive, is measured in ohms, which is the standard unit of electrical resistance or impedance.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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