A capacitor was connected in series with a resistor and then charged up from a power supply. The voltage across the capacitor was measured on an oscilloscope and then compared with those when calculated.
Circuit information:
Capacitor = 80 nF (80x10⁻⁹ F)
Resistor = 40 kΩ (40x10³ Ω)
Supply voltage, V = 5 V
Charging voltage v = V ( 1 − e⁻ᵗ/ᵀ ), where T = CR and is called the time constant.
Calculate the time constant for the circuit