Answer:

1.A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by overload of electricity or short circuit.

2.Fuses an electrical safety device having a metal wire or strip that melts and interrupts the circuit when the current becomes too strong.

3.Earthing is the process of connecting some specific areas of an electrical power system with the earth through low resistance wire for safety purposes.

4.Double or reinforced insulation is another method of protection against electric shock, consisting of an extra layer of supplementary insulation over the basic insulation, or a single layer of special reinforced insulation directly over the live parts.

And finally number

5.Surge protectors (or surge suppressors) are more expensive than extension cords/power strips but if you are trying to protect higher-end electrical .

Explanation:

Thats all correct me if I am wrong