Physics Unit 4 Practice Test

Two like charges

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

Tags

NGSS.HS-PS2-4

When a balloon is rubbed on clothes it acquires a charge by ___________

• Induction

• reduction

• friction

• conduction

When a glass rod is rubbed with silk and the glass rod becomes positively charged, what happens to the electrons?

• they are removed from the rod
• they are added to the rod

Tags

NGSS.HS-PS3-5

What do you call the process of charging a conductor by bringing it near another charged object?

• induction
• polarization
• neutralization
• conduction

Tags

NGSS.HS-PS2-4

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 

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

Tags

NGSS.HS-PS2-4

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

Tags

NGSS.HS-PS2-4

What happens to the electric force between two charges when the distance is tripled?

• 3 times less electric force

• 3 time more electric force

• 9 times less electric force

• 9 times more electric force

Tags

NGSS.HS-PS2-4

What is the SI unit for charge?

• Joules

• Coulombs

• Newtons

• Meters

Tags

NGSS.HS-PS2-4

What do you call the process of charging a conductor by bringing it near another charged object?

• induction
• polarization
• neutralization
• conduction