Assuming you mean electrical conductor / insulator, most bar magnets are made of solid metal, either iron, neodymium or an alloy of aluminium nickel and cobalt, so they conduct electricity.
There is one type of magnet called a ferrite magnet which does not conduct electricity - they are the type often found in loudspeakers.
Aluminium foil is a conductor of electricity. Due to its metallic properties, it allows electrical currents to flow through it easily.
If door knob is a metal then it is conductor if not like wood then insulator.
yes
Glass and rubber are not good conductors of electricity.
The opposite of a conductor (conducts electric flow) is a non-conductor, or something that opposes the flow, which would be an insulator.
A magnet is not a conductor or an insulator. It is a material that can exhibit magnetic properties and create a magnetic field. The ability of a material to conduct electricity or resist the flow of electrons is unrelated to its magnetic properties.
An insulator.
A matchstick is an insulator of electricity because it is made primarily of wood, which is a poor conductor of electricity.
conductor
Toothpaste is an insulator. It does not conduct electricity well because it is not a good conductor of heat or electricity.
A seashell is typically considered an insulator because it does not easily conduct electricity. The material of the seashell is not a good conductor of electricity due to its high resistance.
Paper is an insulator of electricity.
Wood is an insulator.
An insulator for heat and (less so) for electricity. A conductor for sound and vibration.
Brass will conduct both electricity and heat. So brass is a conductor, but not an insulator.
Insulator
No because it is a good conductor of heat and electricity!