Physics Quiz 4

• The forces between charges decreases with distance
• What is the magnitude of the charges of electrons/protons?

  |qe| = 1.6 E -19 C
• What are the units of charge?

  Coulumbs
• What is the number of protons needed to make a charge of 1.00 C?

  6.25 E 18 protons
• Charge is a conserved quantity, it can only be transferred between objects
• Free electrons - electrons that are not bound to atoms in a substance, they can move freely
• Conductors - Any substance that has free electrons and allows these free electrons to move freely through it
• Insulators - Substances that don't allow free electrons to move freely from them