Electricity Test Review

When electrons gather on the surface of an object, such as a rubber balloon, and move slightly in all directions, it is called:

• direct current electricity

• alternating current electricity

• static electricity

• an electric discharge

The following object is:

• positively charged

• negatively charged

• neutral

• none of the above

Nylon is above polyester on the electrostatic series. Predict the resulting charge of each object if a nylon rope came into contact with a polyester cloth.

• nylon rope: negative; polyester cloth: positive

• nylon rope: negative; polyester cloth: negative

• nylon rope: positive; polyester cloth: positive

• nylon rope: positive; polyester cloth: negative

All of the following are insulators, except:

• iron

• plastic

• pure water

• wool

If metal rod X and metal rod Y come into contact with each other, what would be the resulting charge on each rod?

• rod X: positive; rod Y: negative

• rod X: positive; rod Y: positive

• rod X: negative; rod Y: negative

• rod X: negative; rod Y: positive

If a material comes into contact with the sphere of a charged metal lead electroscope with raised leaves and the leaves of the electroscope fall, you can conclude that the material is a(n):

• conductor

• insulator

• charged object

• neutral object

Which of the following devices make us of static electricity?

• dishwasher

• clothes dryer

• toaster oven

• laser printer

The two objects shown here would:

• attract each other

• repel each other

• neither attract nor repel each other

• the interaction cannot be determined

Which of the following is an atomic particle that moves from object to object?

• proton

• electron

• neutron

• nucleus

All of the following materials would be used to make a lightning rod, except:

• iron

• copper

• wood

• silver