What role does humidity play in the presence of static charge?

Static charge accumulation is influenced significantly by humidity levels in the environment. Low humidity can lead to increased static charge because dry air is an insulator. In these conditions, electrons are more likely to transfer from one surface to another, leading to an excess of charge on those surfaces. This is why you often see static electricity effects, such as shocks from touching metal objects, in dry environments.

In contrast, high humidity introduces water vapor into the air, which has conductive properties. The presence of moisture allows charges to dissipate more easily, effectively reducing static buildup. Therefore, in an environment with low humidity, the likelihood of static electricity accumulation is much greater, making this choice accurate.