because they just are;]
they are useful to protect us from electric shocks.
Polythene is considered an insulator. It has low electrical conductivity, meaning it does not allow electric current to flow easily through it. This property makes it useful for electrical insulation purposes.
Rubber, unless soaking wet, is an insulator (will not conduct electricity).
Metals are conductors, not insulators. Both electrical and thermal conductors.
Yes, a glass microscope slide is an electrical insulator. Glass is generally considered an electrical insulator.
A picture for insulator could be a ceramic or glass electrical insulator used on power lines, or a rubber insulator used on electrical wires to prevent electrical conductivity.
No, germanium is a semiconductor material, not an insulator. It has electrical properties that are in between conductors (like metals) and insulators (like nonmetals), making it useful for various electronic applications.
Rubber is indeed a good insulator because it has high resistance to the flow of electricity. This property makes rubber useful in electrical wires and cables to prevent the flow of electricity.
An insulator has several different meanings. The two most common are an electrical insulator and a thermal insulator. an electrical insulator would be polyethylene. a thermal insulator would be wool.
Rubber is an insulator. It does not conduct electricity well because its molecular structure does not allow electrons to move freely. This property makes rubber useful for insulating electrical wires and preventing electrical currents from passing through.
It stops the flow of the electrical current.
Teflon is an insulator, as it has very low conductivity and does not easily allow the flow of electricity. This property makes it useful for applications where electrical insulation is needed, such as in wire coatings or circuit boards.