Two parallel metal plates, $4.0\,\text{cm}$ apart, have electric potentials of $800\,\text{V}$ and $2000\,\text{V}$. Points X, Y and Z lie in the region between the plates at distances of $1.0\,\text{cm}$, $2.0\,\text{cm}$ and $3.0\,\text{cm}$ from the lower plate. Calculate the electric field strength, in $\text{V m}^{-1}$, at X, Y and Z?
Physics 9702 · AS & A Level · Potential difference and power