Electricity Test Review

A 3 C charge and a -4 C charge will________________________.

• Attract

• Repel

Check the following answer choices where electric force will INCREASE.

• When the charges get closer

• If both of the charges get smaller (decrease).

• If one of the charges is bigger (increases).

• If the distance between the charges increases?

Electrical forces between charges depends on ...

• protons and neutrons

• distance and amount of charge

• a strong nuclear force

• when an object has equal number of protons and neutrons

Atomic nuclei of all elements consist of

• protons and neutrons

• protons and electrons

• electrons and neutrons

• protons, neutrons, electrons

A balloon is rubbed against hair. Afterwards it sticks to the wall. The balloon and wall are

• oppositely charged

• like charged

• neutrally charged

If you have an atom with 2 protons and 4 electrons, what is the charge of the atom?

• positive

• negative

• neutral

If an atom has 5 protons and 5 electrons, what is the charge of the atom?

• positive

• negative

• neutral

Which of the following describes the term ground?

• Moving electrons

• A machine that separates charge.

• Can accept or give an infinite amount of electrons. Will neutralize a charge.

• When a spark jumps between two objects.

Which of the following phrases describes electricity?

• a machine that separates charge.

• when a spark jumps between two objects

• causes an electric force and charges to move

• moving electrons

If an object has a 4.5 C charge, is it positively or negatively charged?

• positively

• negatively

• neutral