This laboratory experiment aims to determine the time constant ฯ for a capacitor circuit through multiple methods to understand the physics behind the parameter. Students will construct RC circuits with time constants between 30-50 seconds using available resistors and capacitors. They will measure the voltage over time for both charging and discharging the capacitor. The time constant will be calculated four ways - nominally from component values, by linearizing the charging and discharging exponential equations, and graphically by plotting characteristic voltage points against time.