# What is the maximum electric field in the system?

## Homework Statement

Two parallel plates are connected to a constant electrostatic potential.
Half the space between the plates is filled whit air, one quarter whit a conductor and the fourth quarter whit a dielectric whit realtive permittivity of 80. What is the maximum electric field in the system?

## Homework Equations

Between the plates $$E = \frac{V}{d}$$ V = potential difference and d = distance between plates.

## The Attempt at a Solution

Well first I think that the air will "break" first. I do also think that I need to calculate the flux density first, however Im not sure how to procced