MindTap AC/DC Practice Test

Humidity changes how charges move. When the air is wet, moisture increases the surface conductivity, giving static charges an easier path to dissipate. That means charges don’t build up as readily, so nuisance static is less likely. In dry air, there’s less conductive moisture, so charges can accumulate from everyday friction (rubbing fabrics, shoes on carpet, plastic surfaces) and then discharge as small shocks or sparks. So the idea that nuisance static charges are more likely when the air is wet isn’t correct; they’re typically more likely in dry conditions.