science

11. 1.How do objects become positively charged? Negtively charged?
2.Describe using a diagram charging by rubbing and charging by
induction.
3.Differentiate charging by friction, conduction and induction.
4.Explain the law of charges.
5.How does a neutral object become either positively or negatively
charged?

12. Design improvised devices that can
be used in experiments to show
electrostatic charging by friction,
conduction and induction