Electrostatics

Electric charges that are alike _______ each other.

• Attract
• Repel

Tags

NGSS.HS-PS2-4

What is the SI unit used to measure force? 

• pounds 
• grams 
• newtons 
• friction

The SI unit of charge is

• the ampere
• the newton
• the coulomb
• the joule

Tags

NGSS.HS-PS2-4

When a silver atom looses an electron, its net charge (in coulombs) is

• +1

• -1

• +1.6 x 10^-19

• -1.6 x 10^-19

The charge of an electron is 

• positive. 
• negative. 
• Electrons have no charge

Tags

NGSS.HS-PS2-4

An atom loses an electron.  What type of charge does it have now?

• positive
• negative

Tags

NGSS.HS-PS1-2

When an object gains electrons it becomes __________

• Neutral

• Positively charged

• Negatively charged

Tags

NGSS.MS-PS2-3

An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________

• positively charged because it has excess electrons

• negatively charged because it has excess electrons

• positively charged because it has a deficiency of electrons

• negatively charged because it has a deficiency of electrons

Tags

NGSS.MS-PS1-1

During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...

• the plastic strip acquired extra protons from the cotton.
  
• the plastic strip acquired extra protons from the charging process 
• protons were created as the result of the charging process
  
• the plastic strip lost electrons to the cotton during the charging process 

When you charge a balloon by rubbing it on your hair this is an example of what method of charging?

• Friction
• Conduction
• Grounding
• Induction