Static electricity that is built up as you walk across the carpet and is discharged as you touch the metal door knob
One way of people getting a static electricity charge is to walk across a carpet wearing woolen socks
When you walk across the carpet you pick up stray electrons. Those electrons then transfer from you to the doorknob when you touch it causing a shock.
Scorpions prefer to not walk on carpet. Their legs get caught on the carpet fibres.
I assume that 'charge' refers to the build up of static electricity. Walk across a nylon carpet and touch someone, and a spark of static electricity will give both of you a shock.
walk across a carpet and drag your feet in your socks and touch metal and you will produce static electricity and get a shock.
You just grounded out your charge.
It is when you charge a capacitor. When you walk across a carpet on a dry day, you build up a charge. It is discharged when you touch something.
Walking across a nylon carpet can cause charge separation between you and the carpet. You take on an electrostatic charge as a result. Touching a door knob allows that charge you accumulated to neutralize via a discharge event. The static discharge is the electric shock.