What effect will increasing the power source frequency have on the capacitive reactance of a capacitive circuit?
β’ Relationship between capacitive reactance (Xc) and frequency (f) β’ The basic formula for capacitive reactance in AC circuits β’ How changing one variable in a formula affects the others
β’ Write down the formula for capacitive reactance and identify where frequency appears in it β’ Ask yourself: if frequency gets larger, does the denominator of the fraction get larger or smaller, and what does that do to the overall value? β’ Compare how resistance in DC behaves versus reactance in AC when you change frequency
β’ Confirm the standard formula: Xc = 1 / (2Ο f C) β’ Check whether frequency is in the numerator or denominator of the expression for Xc β’ Verify whether an increase in the denominator of a fraction makes the overall value larger or smaller
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