The measure of the opposition offered by a capacitor to the flow of A.C is called:
Correct answer: A. Reactance
- A. Reactance
- B. Resistance
- C. Impedance
- D. Capacitance
Explanation
The correct option is **Reactance**. Reactance specifically refers to the opposition offered by a capacitor to the flow of AC in a circuit. It varies with the frequency of the AC signal and is measured in ohms.
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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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