1. PARALLEL PLATES

3. From previous work, the electric field strength can be found from the electric force on a test charge

4. In a parallel plate apparatus, a charge is forced from one side to the other with the electric field The work done in moving q is

5. The change in electric potential energy Where is the electric field strength of the plates (in N/C) V is the electric potential applied to the plates (in V) d is the separation distance of the plates (in m)

6. Note: the electric field strength is independent of the charge and position of the test charge. Ex. The electric field intensity in the region between 2 parallel plates is 300 N/C. If the plates are connected to a battery with a potential of 75 V, what is the separation of the plates?