Electrostatics Review for Standard Physics Unit 7 2022

Two like charges:

•  neutralize each other.
• repel each other. 
• must be neutrons. 
• attract each other.

The charge of an electron is:

• Positive. 
• Negative. 
• Electrons have no charge

An object that has more electrons than protons would have what kind of charge?

• Positive
• Negative

Something electricity can't move through is called a(n) ______.

• conductor
• wire
• shoe
• insulator

How many electrons would it take to have a total charge of -3 x 10^-6 Coulombs?

• 3 x 10^6 electrons

• 3 x 10^-6 electrons

• 1.875 x 10^13 electrons

• 5.33 x 10^-14 electrons

A RED metal sphere has a net charge of +2 Coulombs. An identical BLUE metal sphere has a net charge of -2 Coulombs. The conductive metal spheres are touched together and then separated. Which of the following statements correctly explains how the charges moved?

• Negative charges moved from the RED sphere to the BLUE.

• Negative charges moved from the BLUE sphere to the RED.

• Positive charges moved from the RED sphere to the BLUE.

• Positive charges moved from the BLUE sphere to the RED.

• No charges move

A RED metal sphere has a net charge of +2 Coulombs. An identical BLUE metal sphere has a net charge of -2 Coulombs. The conductive metal spheres are touched together and then separated. Which of the following statements correctly identifies the net charge on both spheres after they are separated?

• The RED sphere has a final charge of 0 Coulombs. The BLUE sphere has a final charge of 0 Coulombs

• The RED sphere has a final charge of +2 Coulombs. The BLUE sphere has a final charge of -2 Coulombs

• The RED sphere has a final charge of -4 Coulombs. The BLUE sphere has a final charge of -4 Coulombs

• The RED sphere has a final charge of 2 Coulombs. The BLUE sphere has a final charge of 4 Coulombs

When the distance between two charges is doubled, the electrostatic force between the charges____________.

• is doubled

• is quadrupled

• is halved

• is quartered

The Coulomb is the unit for:

• Charge, q

• Force, F

• Distance, r

• Mass, m

A repulsive force exists between which two particles? (Select ALL that apply)

• Two neutrons

• Two electrons

• An electron and a proton

• Two protons