You have a wiring fault- get it fixed. Or one day you will touch it with wet hands and that will be the end of you.
No, but if it is hot you will be burned
Yes if he's a magnet
By touching an uninsulated conductor which is under electrical tension.
Static electicity.
The person touching the victim will also receive an electric shock (not as powerful as the victim but a shock none the less).
For getting proper earthing. And it will reduce the chance for getting electric shock
The electric shock he got by touching the door was an example of static electricity.
A microwave oven should not shock when it is turned off. If you are experiencing electric shocks when touching the microwave oven, it could be due to a faulty electrical connection or a grounding issue. It is recommended to consult a professional electrician to inspect and fix the problem.
Static shock si the kind of shock you get from touching other people.
Because of the risk of electric shock to people touching it ! It also guards against two wires touching each other - causing a short circuit.
why sometimes get a shock on a cold day touching a metal
This is called Triboelectricity (tribo means friction).