Electric Force Review

The transfer of what type of atomic particle is responsible for the static charges on objects?

• neutrons
• protons
• electrons
• none of these

What types of charges repel?

• Positive and Positive
• Positive and Neutral
• Negative and Neutral
• Neutral and Neutral

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• A positive charge.
• A negative charge.
• A neutral charge
• No charge at all

Walking across a carpet is an example of charge being transferred by

• friction.
• induction.
• contact.
• static electricity

The closer the charges, the ___________ the force between them

• closer
• further
• stronger
• weaker

Which part of the atom is positively charged?

• Proton
• Neutron
• Electron

A balloon has a negative charge.  The glass rod has a positive charge.  What will happen when the glass rod is brought near the balloon?

• The balloon will be attracted to the rod
• The balloon will be repelled by the rod
• The balloon will remain in place
• The balloon will spin in circles

An attracting force occurs between two charged objects when the charges are of _______________.

• like signs

• unlike signs

• equal magnitude

• unequal magnitude

What happens to the electric force between the objects when you increase the distance between a positively charged object and a negatively charged object? (Everything else remains constant.)

• The electric force decreases.

• The electric force increases.

• The electric force remains constant.

• There is not enough information to answer the question.

Which is NOT an insulator.

• Wool
• Plastic
• Copper
• Glass