What can happen if an electric file is held at the wrong angle during use?

Holding an electric file at the wrong angle during use can result in grooves being created in the nail. This occurs because the file might not make uniform contact with the nail surface, leading to uneven pressure and movement. When the angle is incorrect, it can also lead to the file catching on the nail, which further contributes to the formation of these grooves. Proper angling of the electric file ensures an even and smooth filing process, minimizing damage to the nail and allowing for a more polished finish.

While chipping, faster filing, and discoloration can be outcomes of improper technique, they are not as directly linked to the angle at which the electric file is held as groove formation is. Grooves are a clear indication of a filing technique issue, making it the most relevant consequence in this context.