I remember the physics teacher said before that if we stand on a stool and touch the line of fire with our hands, we won't get an electric shock. But I stood on the stool and tried it with an electric

I remember the physics teacher said before that if we stand on a stool and touch the line of fire with our hands, we won't get an electric shock. But I stood on the stool and tried it with an electric pen. Electric shock is caused by current passing through the body, so electricity without electricity or current will not cause electric shock.

Stools are generally made of insulating materials, so are socks and shoes. So people standing on a stool, if the current can't find a channel, it won't pass through the body, so don't worry about getting an electric shock. To use an inappropriate metaphor, plug the charger into the power socket but don't answer the mobile phone, and there will be no current on the charger.

For another example, why didn't the sparrow get an electric shock when it stopped on the high-voltage line? This is because there is no current passing through the body. The joke that the sparrow will get an electric shock on the wire when the French kiss is funny, but it also vividly illustrates the difference between electricity and current.

I hope my answer is helpful to you.