Physics Unit 2 Revision (Higher tier)

Static electricityIn static electricity when two objects are rubbed together the electrons movefrom one object to another. This causes one object to have an overall positivecharge and the other object to have an overall negative charge.Like charges repelUnlike charges attractNeutral objects are attracted to bothpositively and negatively charged objects.If you wanted to test if an object was charged then you could check if itattracted bits of paper, hair etc. It could attract or repel another chargedobject.If an object becomes highly charged then the potential difference betweenthen object and the ground increases and the objects will discharge. When acharged object discharges (goes to ground) then a spark might occur. This isthe electrons jumping from the object to the earthed conductor.