Physics 5 - Electrostatics

What is the name of this device that is used to detect charges?

What is the name of the particles that being transferred when you rub a balloon on a cat?

• Proton

• Neutron

• Electron

• Positron

Insulators are different from conductors in that insulators ____.

• do not contain electrons or protons 

•  do not contain any charge

• have a weaker attraction for electrons 

• do not allow charge to freely move 

Electrostatic force F exists between two point charges. If both charges are doubled, the force between the charges will be _____.

• F/4

• F/2

• 2F

• 4F

A repulsive force exists between which two particles?

• 
  Two neutrons

• 
  An electron and a neutron

• 
  An electron and a proton

• 
  

  Two protons

In which direction will the electric force from the two equal positive charges move the negative charge shown in the figure?