What is not an insulator?

The correct answer is Mercury. Mercury is NOT an insulator. Insulators are material that does not conduct electricity. Examples – paper, plastic, rubber, glass, Ebonite, air, Styrofoam, etc.

Which of the following is NOT example of insulator?

As the body of pots and pans used in the kitchen are made of metals like copper and aluminium, they will be good conductors of electricity and therefore will be categorized as “not an insulator”. So the correct option is C.

What are 4 examples of insulators?

Examples of insulators include plastics, Styrofoam, paper, rubber, glass and dry air.

Which of the following is not an insulator quizlet?

Which of the following is not an insulator? Water is not an insulator, the ions in ordinary water make it a good conductor.

Which of the following is not an insulator Class 7?

Which of the following is not an insulator i) Bricks ii) Brass iii) Bamboo iv) Plastic. Plastic and wood are poor conductors of heat. Brass is a type of metal which is alloy of zinc and copper which readily conducts electricity. Remaining all are insulators which means it does not conduct electricity.

Is air an insulator?

Air is a good insulator because it is a gaseous substance, therefore its spread-out molecular configure resists heat transfer to some degree. … An example of air as an insulator is a double-pane window. Double-pane windows are two sheets of glass with a stagnant space of air or gas between the two panes.

What of the following is an insulator?

– Graphite is a non-metal. It is an allotrope of carbon. Due to the movement of non-bonded electrons in between its adjacent layers, graphite does conduct electricity and therefore, graphite is a conductor. – Therefore, sulphur is an insulator.

Is Copper an insulator?

Insulators oppose electrical current and make poor conductors. Some common conductors are copper, aluminum, gold, and silver. Some common insulators are glass, air, plastic, rubber, and wood. Insulators that can be polarized by an electric field are called dielectrics.

Is water an insulator?

Well actually, pure water is an excellent insulator and does not conduct electricity.

Is aluminum an insulator?

Aluminum has an emissivity of around 0.04. That means it radiates very little heat away from its surface, which is one reason why radiators aren’t made from aluminum! Aluminum foil can be an effective insulating material because it doesn’t radiate heat out into the environment.

Is rubber a insulator?

Rubber is known to be an insulator because rubber can limit the transfer of electricity. The rubber properties prevent the electrons to be able to freely move and the addition of the electrons being tightly bounded makes rubber a good insulator .

Is Zinc an insulator?

Zinc Conductivity

Zinc is a moderately good conductor of electricity”.

Is plastic an insulator?

Plastics are excellent insulators, meaning they can efficiently trap heat — a quality that can be an advantage in something like a coffee cup sleeve.

Is Ceramic an insulator?

A material that is unable to conduct electricity due to its high level of electrical resistance is an insulator. … Because ceramics are fired in a kiln, they can be fashioned into a wide variety of shapes with excellent heat resistance and durability. For these reasons, ceramics have long been used as insulators.

Is Cotton an insulator?

Cotton is a great thermal insulator – as long as it’s dry. Once wet, cotton becomes a poor insulator and does a poor job of preventing hypothermia -hence the old adage, “cotton kills”.

Thermal Conductivity.
Substance Thermal conductivity ( )
Snow (dry) 0.10
Cork 0.042
Glass wool 0.042
Wool 0.04

Is steel an insulator?

All metals are pretty good conductors of heat, not insulators. Stainless steel isn’t the best conductor, but it’s up there, and provides basically no insulating capabilities.

Is glass a insulator?

Perhaps the best known material that has excellent insulating properties is glass. … In addition to being a good electrical insulator, glass has many other useful properties. It is a good thermal insulator (most material are either both or neither), and it is resistant to many corrosive chemicals.

Is Wool an insulator?

Wool as an Insulator

Wool’s natural structure makes it incredibly effective as an insulator. … Using wool as insulation actually helps keep your home warm in the winter and cool in the summer, while improving indoor air quality.

Is brass A insulator?

It is highly conductive which is why it is has been used in electrical wiring since the days of the telegraph. Brass however – which contains copper – is far less conductive because it is made up of additional materials that lower its conductivity, making it unsuitable for electrical purposes.

Are nonmetals good insulators?

Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them. … Metals are also generally good heat conductors while nonmetals are not.

Is stainless an insulator?

Titanium and its alloys have extremely low thermal conductivity. It also tends to be extremely resistant to corrosion. Stainless steel is also a good insulator, though not as good as Ti.