The electric field in a region is given by `vecE = (A/x^3) vecI.` Write a suitable SI unit for A. Write an experssion for. the potential in the region assuming the potential at. infinity to be zero.

Explanation

To solve the problem step by step, we will first determine the suitable SI unit for A and then derive the expression for the electric potential in the given region.

### Step 1: Determine the SI unit for A

The electric field \(\vec{E}\) is given by:

\[
\vec{E} = \frac{A}{x^3} \hat{i}
...