Electric and Gravitational Fields

Electric and Gravitational Fields

1. Similarites

   • They're both forces
   • They both follow the inverse square law
     • Where F ∝ 1/r²
   • They both create radial fields

2. Differences

   • Electric can be positive and negative whereas gravitational can only be postive
   • Objects can be shielded from electric fields, you cant avoid gravitational
   • The medium between charges affects the size of the electric field, but not of the gravitational field.

3. Charged Parallel Plates

   • Charged particles travel through uniform electric fields like projectiles
   • A uniform field can be produced by connecting two parallel plates to the opposite poles of battery
   • E= V/d

4. Uniform Electric fields

   • To work out the magnitude of the uniform electric field strength you use a different equation
     • E = V/d