Chapter 13
Static electricity
An object becomes charged when its positive and negative charges no longer balance.
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Electric charge and interactions
Distinguish positive, negative and neutral objects, and interpret attraction and repulsion.
Charging by rubbing
Account for both objects when electrons transfer between materials.
Charging by induction
Explain redistribution, earthing and the order needed to retain a charge without contact.
Electric fields and force direction
Draw the required charge patterns and use field direction to predict forces on either sign.
Discharge hazards and particle collection
Explain sparks, electrostatic precipitation and a supplied particle separator.