Charging and discharging of a 10µF capacitor with variable time constant.
What it shows:
The growth and decay of current in an RC circuit with a time constant chosen so that the charge and discharge is visible in real time.
How it works:
By choosing the values of resistance and capacitance, a time constant can be selected with a value in seconds. The time constant τ is given by
τ = RC
To obtain useful values, we chose three resistors 100K, 200K and 400K in series with a 10µF capacitor, giving time constants of...
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