Coulomb's Law Practice

When distance increases, electrostatic force ____________

• decreases

• increases

What variable is a Coulomb the unit for?

• Charge
• Force
• Distance
• Mass

What variable do "Newtons" represent?

• Electrostatic Charge
• Force
• Distance
• Mass

Recap:

Coulomb’s law states that the force between two charged objects will __________ when the magnitude of the object’s charge increases.

Coulomb’s law also states that the force between two charged objects will __________ when the distance between objects increases.

• increase; increase

• increase; decrease

• decrease; increase

• decrease; decrease

A material in which electrons are not able to move easily 

• Circuit 
• Insulator 
• Resistance 
• Conductor

The Electric Force is strongest when charges are...

• close together
• far apart
• the electric force is constant everywhere

Approximately how much force would be generated by two charged objects held 2 m apart, if q₁ has a charge of 3.0 C and q₂ has a charge of 4.0 C?

• 0.5 N

• 1.5 N

• 3 N

• 6 N

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

5 C and 8 C charges are 8 m apart. What is the force between them?

• 5.625 x 10⁹

• 5.625 x 10^-9

• 4.5 x 10¹⁰

• 4.5 x 10^-10

Two charges of equal value (-50 C) are 1000 m away from each other. What is the force between them?

• .0025 N

• 22,500,000 N

• 2500

• 1.6675 x 10^-13 N