Electrical Review

A material has a net electric charge because it

• discharges

• has an alternating current

• has an excess or shortage of electrons

• has a direct current

Static electricity is the study of

• buildup of charge

• electric discharges

• electric fields

• all of the above

A strong electric field is

• directed toward a charge

• directed away from a charge

• caused by a large quantity of charge

• caused by a small quantity of charge

What is a material called that easily carries a current?

• insulator

• electric potential

• semiconductor

• conductor

A superconducting material

• requires very high ckurrent

• has no resistance at room temperature

• has no resistance at low tempaerature

• has high resistance at low temperature

What does Ohm's law state?

• Ccurrent equals voltage times resistance

• voltage equals resistance divided by current

• voltage equals current divided by resistance

• voltage equals current times resistance

If an area has four -1C particles and five 2 C particles, what is the net charge of that area?

• 6C

• 4C

• 2C

• 5C

An unknown material is in contact of a charged object. If you touch the unknown material, you would feel an electrical interaction (like being shocked) from the material. Is this material a conductor or insulator?

When an object if being charged, which particle is responsible of moving around?

What are the three ways of statically charging an object?

• friction, conduction, magnetic

• conduction, induction, friction

• magnetic, friction, conduction