Final answer:
The setup of parallel electric field plates relates to the concept of capacitance.
Step-by-step explanation:
The setup of parallel electric field plates relates to the concept of capacitance. Capacitance is the ability of a system of conductors and insulators to store electrical energy by separating positive and negative charges.
When two parallel plates are connected to a power source, a uniform electric field is established between the plates, and this setup forms a capacitor.