Two large parallel metal plates are apart and have charges of equal magnitudes but opposite signs on their facing surfaces. take the potential of the negative plate to be zero. if the potential halfway between the plates is then , what is the electric field in the region between the plates?

Some data in the question are missing. This is the complete text:

"Two large parallel metal plates are 1.5 cm apart and have charges of equal magnitudes but opposite signs on their facing surfaces. Take the potential of the negative plate to be zero. If the potential halfway between the plates is then +5.0 V, what is the electric field in the region between the plates?"

666.7 V/m

Explanation:

First of all, let's remind that the electric field between two parallel, oppositely charged plates is uniform (constant).

This means that the electric potential between the plates increases linearly with the distance, according to the equation:

where

V is the electric potential at distance d from the plate at zero potential

E is the magnitude of the electric field

d is the distance from the plate at 0 V

Here we have:

V = +5.0 cm at halway between the plates, therefore at a distance of

from the plate at 0 V

Therefore, the electric field is

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