In a capacitive circuit, the time constant is the duration required for the voltage to ________ relative to its final steady-state value.

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decrease to 36.8% of its ultimate steady valueincrease to 38.6% of its ultimate steady valueincrease to 63.2% of its ultimate steady valuenone of these optionsnot applicable

Explanation

The time constant in a capacitor circuit is defined as the time it takes for the voltage to rise to approximately 63.2% of its final steady-state value. This characteristic indicates how quickly the capacitor charges or discharges through the circuit.