Question

Looking at a RC circuit, using resistors and capacitors, calculate the RC time voltage for discharging and charging capacitors. The voltage from the power supply is 10V. V = 0.63*V0, V = 0.37*V0

Answer 1

For discharging capacitor ,

where V is voltage across capacitor at time t , V_o is voltage across capacitor at time t = 0 and RC time constant

If we consider voltage across discharging capacitor as, V = 0.63 V_o

then or -t/RC = ln(0.63) = -0.462   or t = 0.462 RC

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For charging capacitor ,

If we consider voltage across charging capacitor as, V = 0.37 V_o

then or

Hence, as calculated for discharging capacitor , time t = 0.462 RC