Uniform Field Samples - Capacitors & Stored Charge Step by Step

In the ideal central region, each checked sample vector has the same magnitude and direction. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Sample the central region

The diagram samples the central region at 3 points.

\text{sample count} = 3

Read the same field each time

Each sample vector reads 4 newtons per coulomb and points the same way.

E_{\text{each sample}} = 4\ \text{N/C}

Position changes, field does not

The sample points are at different positions between the plates, but the ideal central field stays the same at each checked sample.

\begin{array}{c|c}x&E\\\tfrac{3}{4}\ \text{m}&4\ \text{N/C}\\\tfrac{3}{2}\ \text{m}&4\ \text{N/C}\\\tfrac{9}{4}\ \text{m}&4\ \text{N/C}\\\end{array}