Electric Potential: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Electric Potential. Understanding the underlying formula is key to arriving at the correct answer below:

The relationship between electric field and potential is $E = -\frac{dV}{dr}$. Since the electric potential $V$ is constant at $5 \text{ V}$ throughout the region, the gradient $\frac{dV}{dr}$ is zero. Therefore, the magnitude of the electric field is zero.