6.2.1 Point and spherical charges

• An Electric field is a region in which a charged particle experiences a force/acceleration
• Electric field lines:

  They always go from positive to negative

  Enter and leave surfaces at 90 degrees to that surface
• Diverging electric fields indicate a weakening field

  Converging field lines indicate a strengthening field
• Electric field strength is defined as the force per unit positive charge

  E = Force, F/Charge, C

  can be rearranged to F= Q*E