Which of these can result from working on live circuits?

Working on live circuits can lead to burns because there is a risk of electrical shock, which can cause tissue damage. When a person comes into contact with live electrical components, the electric current can pass through the body, causing severe thermal burns at the entry and exit points of the current, as well as potentially deeper internal burns. This is particularly dangerous because it can happen without warning, and the severity of the burn can vary depending on factors such as the type of current, voltage levels, and the duration of contact.

Other options such as noise pollution, vibration injuries, and eye strain are not direct consequences of working on live electrical circuits, making them less relevant in this context. For instance, while machines or tools may cause noise or vibration injuries, these issues aren't inherent to the nature of working with live circuits. Eye strain, although possible from various industrial settings, is likewise not specifically related to the risks involved in handling live electrical components.