Conductors and Insulators Notes

Multiple Choice

Which of the following is an insulator?

• Glass

• Copper

• Human body

Multiple Choice

Conductors are made of what kind of material?

• metals

• plastics

• rubber

• cloth

Multiple Choice

What is the BEST example of a conductor of thermal energy?

• A wooden block

• A wool oven mitt

• A plastic mug

• A metal pan

Multiple Choice

What are some common uses of conductors in everyday life?

• Electrical wiring, metal utensils, metal pipes

• Glassware, ceramic plates, cardboard boxes

• Plastic utensils, rubber pipes, wooden furniture

• Paper clips, rubber bands, plastic bags

Multiple Choice

Discuss the importance of understanding conductors and insulators in electrical safety.

• Understanding conductors and insulators is only important for environmental protection

• It helps in identifying materials that can conduct electricity and pose a risk of electric shock, as well as materials that can insulate and prevent electrical hazards.

• Conductors and insulators are only relevant in mechanical safety

• It has no impact on electrical safety

Multiple Choice

In the diagram shown, a charged object is touched to a metal sphere (Fig. A). The sphere acquires a negative charge (Fig. B), and the charge within the sphere quickly distributes itself uniformly throughout the sphere (Fig. C).

The Sphere represents an example of a(n) -

• Insulator

• electromagnet

• solenoid

• conductor

Multiple Choice

Material One has many loose electrons in its valence band. Material Two has very few electrons in its valence band. Material Two is most likely

• A conductor

• A insulator

• A sandwich

• The coronavirus

Multiple Choice

Which substance is a conductor?

• W

• X

• Y

• Z

Multiple Choice

The diagram below shows a lab setup and a data table.
Testing Materials Did the lightbulb shine?

ebonite rod

copper cylinder

Brass washer

Iron nail

Wood dowel

Which statement is most likely to be true when the results are obtained and analyzed?

• The ebonite rod and the copper cylinder provide the greatest resistance to current in the circuit.

• The copper cylinder, the brass washer, and the iron nail allow electrons to move freely.

• The iron nail, the copper cylinder, and the brass washer allow protons to move freely.

• Both the wood dowel and the ebonite rod have the lowest resistance to current in the circuit.

Multiple Choice

What is the main difference between conductors and insulators?

• Conductors allow the flow of electricity, while insulators do not.

• Conductors are always solid, while insulators can be liquid or gas.

• Conductors are always transparent, while insulators are always opaque.

• Conductors allow the flow of water, while insulators do not.