Coulomb's Law

What is the equation for Coulomb's Law?

• Fe=(k)(q1)(q2)/(r^2)
• Fe=kq1q2r^2
• Fe=kq1/q2r^2
• Fe=(kq1q2)/(r^2)

What is the force between two charges of 5 x 10 ^ -8  if they are .05 m apart?

• .0000225N
• .0025N
• .009N
• .09N

What is the value of K in the equation of Coulombs Law?

• 10 x 9 ^ -10
• 10 x 9 ^10
• 9 x 10 ^ -9
• 9 x 10 ^ 9

What is the variable R measured in?

• Meters
• Centimeters
• Kilometers
• Inches

In the equation, what do the Q's represent?

• Values
• Coulombs
• Charge 1 and Charge 2
• Newtons

If two balloons have a charge of 7 x 3 ^ -4 with a distance of .0001 m between them,  what is the charge?

• 67215363.51N
• .00000001N
• 6.721536351 x 10 to the 15th N
• .0001N

Electric charges under the action of electric forces are known as..?

• Electric Field
• Electromagnetic Field
• Electrostatic
• Electric Field Lines

Law stating force directly proportional to charges and opposite proportional to square of radius is called..?

• Newton's Law
• Law of Conservation of Momentum
• Law of Motion
• Coulombs Law

Two positive charges q₁ = 16 and q₂ = 4 are separated by a diameter of 3 m will produce force of..?

• 40N
• 42.7N
• 43.1N
• 40.14N

When the distance between two charges is cut in half, the electrical force between the charge's force do what?

• Increase 2 times
• Increase 4 times
• Decrease 2 times
• Decrease 4 times