D.2 - 2 - Coulomb's Law

What does Coulomb's Law calculate?

• Force between charged objects

• Mass of objects

• Distance between objects

• Speed of light

If the electrostatic force (F) calculated by Coulomb's Law is negative, what does it indicate about the charges?

• They are repelling

• They are attracting

• They are neutral

• They are stationary

What is a key difference between Coulomb's Law and the Law of Universal Gravitation regarding the forces they describe?

• Gravitational force can repel

• Electrostatic force is always attractive

• Gravitational force is always attractive

• Electrostatic force only applies to large objects

What is the conversion factor for a micro-Coulomb (µC) to a Coulomb (C)?

• 10^3 C

• 10^-3 C

• 10^6 C

• 10^-6 C

What is a common mistake students make when given a measurement in micro-Coulombs (µC) for Coulomb's Law calculations?

• Forgetting to square the distance

• Not converting to meters

• Forgetting to convert to regular Coulombs

• Using the wrong Coulomb constant