1.Based on the mathematical equation for the potential difference across a charging capacitor as a function of time, how long does it take a capacitor to become fully charged? Why? 2. From a practical point of view, how many time constants are required for a capacitor to become fully discharged (i.e. more than 99% of the charge lost)? Why?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.