Physics B (6A) 061125 DOL

What is the SI unit of electric charge?

• Newton

• Coulomb

• Joule

• Volt

Which law describes the force between two point charges?

• Newton's First Law

• Ohm's Law

• Coulomb's Law

• Faraday's Law

In Coulomb's Law, what does the variable r represent?

• The mass of the charge

• The distance between charges

• The speed of light

• The electric field

If two charges are both positive, the force between them is:

• Attractive

• Repulsive

• Zero

• None of the above

What is the unit for distance in Coulomb's Law calculations?

• Meter (m)

• Second (s)

• Coulomb (C)

• Newton (N)

If the distance between two charges is doubled, the force between them becomes:

• Four times greater

• Twice as great

• One-fourth as great

• Half as great

Which of the following is NOT a correct unit for charge?

• Coulomb (C)

• Ampere (A)

• Microcoulomb (uC)

• Nanocoulomb (nC)

Which of the following best describes the magnitude of electric force as the charges increase?

• It decreases

• It stays the same

• It increases

• It becomes zero

What happens to the electric force if the distance between two charges is halved?

• It becomes four times greater

• It becomes half as great

• It becomes twice as great

• It becomes one-fourth as great

What is the effect on the electric force if one of the charges is doubled?

• The force is doubled

• The force is halved

• The force is quadrupled

• The force is unchanged