electrostatics

Two like charges

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

Tags

NGSS.HS-PS2-4

What does it mean when the electric field lines are close together?

• the field is positive
• the field is negative
• The field is strong
• the field is weak

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

The law of conservation of charge states that...

• all atoms have more protons than electrons
• only protons can be rubbed off of an atom
• charge cannot be created or destroyed
• charge cannot be transferred 

What is the name of the particle that is being transferred?

• Proton
• Neutron
• Electron
• Positron

Tags

NGSS.HS-PS1-8

Which statement is true of a positively charged object?

• Positively charged objects do not contain any electrons.

• Positively charged objects do not contain neutrons or electrons.

• There is a lack of electrons on a positively charged object.

• The protons and the electrons are both positively charged on such objects.

Tags

NGSS.HS-PS1-3

What is the end result of charging by contact?

• Both object have the same charge, so they will attract one another

• Both object have the same charge, so they will repel one another

• Both object have the opposite charge, so they will attract one another

• Both object have the opposite charge, so they will repel one another

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

When a charged object contacts another object (one is usually a conductor), there is a transfer of electrons. How do you determine which object acquires the transferred electrons?

• Always transfer from the bigger to the smaller object, to make it even

• Transfer is based on the initial charge of the two objects

• Transfer is based on how much electron affinity that each object has

• Always transfer from the more negative to the more positive object

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Which of the following labeled points is in the region with the strongest force of electric charge

• A

• B

• C

• D

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

When the distance between two charges is halved, the electrical force between the charges

• quadruples

• reduces to one fourth

• halves

• doubles

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Two similar metal spheres, A and B, have charges of +2.0 x 10^-6 coulomb and +1.0 x 10^-6 coulomb, respectively. The magnitude of the electrostatic force on A due to B is 4.0N newtons. What is the magnitude of the electrostatic force on B due to A?

• 2.0N

• 4.0N

• 8.0N

• 1.0N

Tags

NGSS.HS-PS2-4