level: electrostatic force and charge
Questions and Answers List
level questions: electrostatic force and charge
| Question | Answer |
|---|---|
| what can happen is electrostatic charge builds up as fuel flows through a refuelling pipe | it could cause a spark and trigger an explosion |
| what happens if you rub a plastic rod with cloth | electrons move from the plate onto the cloth, creating an overall negative charge on the cloth, because the plastic has lost electrons, the overall charge becomes positive |
| how does a van der graaf work | the moving belt moves and electrons pass from the top plastic roller to the belt and then the electrons pass from the belt and transfer to the earth, over time the top region becomes positive. the dome on top acts like a store of positive charge allowing the charge to spread out so if someone toughed it, they would have an overall positive charge so the hairs on their head all become positive and resell each other |