Under which conditions does capacitive reactance reach its highest value?

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When both capacitance and supply frequency are lowWhen capacitance is low but supply frequency is highWhen capacitance is high and supply frequency is lowWhen both capacitance and supply frequency are highNone of the above

Explanation

Capacitive reactance (Xc) is inversely proportional to both capacitance (C) and frequency (f), given by the formula Xc = 1 / (2πfC). Therefore, the reactance is greatest when both capacitance and frequency are at their lowest values.