AC circuits can possess characteristics of resistance, inductance, and capacitance. In terms of units of measure, how is the capacitive reactance of the circuit expressed?
ā¢ Capacitance is measured in farads, but capacitive reactance is not the same thing as capacitance ā¢ In AC circuits, resistance and reactance are both measured using the same unit ā¢ Think about what unit is used for opposition to current flow in a circuit
ā¢ What is the unit of measure for basic resistance in a DC or AC circuit, and does reactance behave similarly in terms of opposition to current? ā¢ How does the unit for capacitance (like a storage tank for charge) differ from the unit for something that opposes current flow? ā¢ Which of the options represent: a unit of inductance, a unit of conductance, a unit of opposition to current, and a unit of capacitance?
ā¢ Be clear on the difference between capacitance (a property of a component) and capacitive reactance (its opposition to AC current) ā¢ Identify which option is the unit for opposition to current flow in a circuit ā¢ Eliminate the options that are clearly units for inductance, conductance, or capacitance, not opposition
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