COULOMB'S LAW QUIZ.

Coulombs Law describes the math relationship between charges and the force between those charges (either attracting or repelling). Which changes would make the force between two charges STRONGER?

• Increase the distance (r) between the charges

• Increase the amount of charge on either or both charges (q)

• Decrease the amount of charge on either or both charges (q)

A balloon is rubbed on a student's head. What occurs because of this?

• Charged particles on the balloon are destroyed

• Positively charged particles move from head to balloon

• Charged particles from the balloon are released into the air

• Negatively charged particles move from head to balloon

Which is the value of the constant in Coulomb's equation?

• k = 9·10^-9

• k = 9.8

• k = 6.67·10^-11

• k = 9 ·10⁹

Find the magnitude of the force between two charges of 1.0 C each which are 1.0 meter apart?

• 9E-9 N
• 9E9 N
• 1.1E10 N
• 1.1E-10 N

What variable is a Coulomb the unit for?

• Charge
• Force
• Distance
• Mass

As two oppositely charged particles approach each other, what happens to the electrical force between them?

• The attractive force increases

• The magnitude of the electric force decreases

• The repulsive force increases

• The magnitude of their charges increases

If the distance doubles, what happens to the force?

• Reduced by half
• Reduced by 1/4
• Stays the same
• Quadruples

If the distance doubles, what happens to the force?

• Reduced by half
• Reduced by 1/4
• Stays the same
• Quadruples

How do electrons differ from protons?

• They are the same thing
• Electrons hold a negative charge and protons hold a positive charge.
• Electrons are positively charged and protons are negatively charged.
• Protons are neutral 

Coulomb's law says that the force between any two charges depends

• directly on the size of the charges

• inversely on the square of the distance between the charges

• both are correct