What does the formula mentioned in the content calculate?

The formula mentioned in the content calculates worker body current. In the context of occupational health and safety, particularly in environments where electrical exposure is a concern, understanding the body current is crucial. Body current refers to the electrical current that passes through a person's body when they come into contact with an electrical source.

Calculating body current is important for assessing potential risks associated with electrical exposure and ensuring that safety measures are adequate to protect workers. This is especially relevant in substation operations where electrical safety is paramount. The other options relate to different areas of health monitoring but do not pertain to electrical exposure assessment. Worker oxygen levels, blood pressure, and heart rate are vital health metrics, but they do not directly involve the calculation of body current in the context described.