Electric Fields

Electric Fields

1. Force Fields

   • A field means a region where an object experiences a force without being touched.
   • Magnets cause magnetic fields and electric charges have electric fields around them.

2. Electric Fields

   • In an electric field, a charged particle will eperience a force.
   • Lines of force are used to show the strength and direction of the force.
   • The closer the field lines, the stronger the force.
   • Field lines are continuous.

3. Gravitational Fields

   • If a mass is lifted or dropped though a height then work is done (energy is changed)
   • If the mass is dropped then the energy will change to kinetic energy.
   • If the mass is lifted then the energy will change to gravitational potential energy.
   • Change in gravitational potential energy = work done.

4. Moving charges in electric fields

   • When a positively charged particle is released from a plate then the electrical potential energy is converted to kinetic energy.
   • QV = 0.5 mv (squared)

5. Electric field patterns