True or False: If there is a difference of potential across a worker's body, current will not flow.

The statement is false because if there is a difference of potential, or voltage, across a worker's body, it can create a path for electric current to flow. The flow of current is contingent on the presence of a voltage difference and the availability of a conductive path.

For a body to conduct electricity, there must be an adequate voltage that exceeds the body's resistance. In practical terms, this means that even a small voltage can lead to a significant current flow through the body if the conditions are right, such as when a person is in contact with ground or a conductive material. Therefore, the idea that current will not flow across the body when there is a difference of potential is incorrect.

Understanding this concept is critical for safety in electrical work, as it highlights the importance of recognizing voltage differences and their potential to cause harmful electrical currents.