Physics Unit 8 - Electricity (Practice Test)

Two like charges

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

Tags

NGSS.HS-PS2-4

What direction are the electric field lines around an electron?

• towards the charge
• away from the charge

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

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

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

• induction

• polarization

• neutralization

• conduction

What direction are the electric field lines around a proton?

• towards the charge
• away from the charge

Which of the following is an insulator of electricity?

• copper

• silver

• Glass

• aluminum

Which of the following is a good conductor?

• Copper

• Glass

• rubber

• wool

assume a rubber rod is rubbed against a rabbit fur and gains 5 electrons.  which of the following is true?

• The fur lost 5 electrons
• the fur gained 5 electrons
• the fur gained 5 protons
• The fur lost 2 electrons

Tags

NGSS.HS-PS2-4

The distance between two charges  and  is r, and the force between them is F. What is the force between them if the distance between them is tripled?

• 3F
• 9F
• F/3
• F/9

Tags

NGSS.HS-PS2-4