Understanding Electric Charge and Conductors

What are the three types of electric charge?

• Positive, Magnetic, Neutral

• Static, Dynamic, Electric

• Positive, Negative, Electric

• Positive, Negative, Neutral

Which type of charge is carried by protons?

• Neutral charge

• Variable charge

• Negative charge

• Positive charge

If an object has 5 excess electrons, what is its charge?

• -8 x 10^-19 C

• -5 x 10^-19 C

• +8 x 10^-19 C

• 0 coulombs

How do you calculate the net charge of an object?

• Charge = Number of electrons + elementary charge

• Charge = Number of electrons /elementary charge

• Charge = Number of electrons X elementary charge

• Charge = Number of electrons - elementary charge

What is the net charge of an object with +3 and -5 charges?

• -2

• -3

• +5

• +2

What is the primary difference between conductors and insulators?

• Conductors allow electric current to flow; insulators do not.

• Insulators can conduct electricity under high pressure; conductors cannot.

• Conductors are always made of metal; insulators are always made of plastic.

• Conductors are used for insulation; insulators are used for conduction.

Which material is a good conductor of electricity?

• Copper

• Glass

• Rubber

• Wood

What is an example of an insulator?

• Rubber

• Copper

• Iron

• Aluminum

How do electrostatic forces act between two charged objects?

• Electrostatic forces only repel objects regardless of their charge types.

• Electrostatic forces have no effect on neutral objects.

• Electrostatic forces can only act at very short distances.

• Electrostatic forces act by attracting or repelling charged objects based on their charge types.

What is one common application of conductors in everyday life?

• Wooden furniture

• Plastic containers

• Insulation material

• Electrical wiring