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Impedance
19 questions By Tony R. Kuphaldt
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Question 19 of 19
The mathematical inverse, or reciprocal, of resistance (R) is a quantity called conductance (G).
G = 1 RIs there an equivalent quantity for reactance? What is the reciprocal of reactance, and what unit of measurement is it expressed in? Hint: its symbol is B.
Reveal answerB = susceptance, which is the reciprocal of reactance.
B = 1 XSusceptance, like conductance (G) and admittance (Y) is expressed in the unit of siemens.
Notes:Ask your students where they obtained this information. Also ask them what the old (pre-siemens) unit of measurement was.
Where would such a quantity be useful in AC circuit calculations? Ask your students where the quantity of conductance (G) is useful in DC circuit calculations.
