Grounding refers to establishing a zero potential reference point, often using the Earth due to its vast size and stability in electron exchange. In practical applications, maintaining a conductor at zero potential involves creating a low impedance connection to the Earth, which can be complex depending on soil conditions. While the concept of an infinite conducting plane suggests zero energy is needed to move a charge to it, using Earth as a reference is more practical for electrical systems. The choice of reference point for potential differences is arbitrary, but Earth is commonly used for convenience. Understanding grounding is essential for effective electrical circuit design and safety.