7. Mention three likenesses and three differences between magnetism and static electricity.
8. Will you receive a greater shock by touching a knob of a charged Leyden jar when it is held in the hand or when it is standing on a sheet of glass? Explain.
9. In what way may an electric charge be divided into three equal parts?
Review Outline: Magnetism and Static Electricity
Comparison between Magnetism and Static Electricity.
| Substances are: | magnetic, non-magnetic. | conductors, insulators. |
| Produced by: | induction. | friction, or induction. |
| Theory: | molecular. | electron. (fluid) |
| Fields of Force Explain: | attraction, repulsion, induction, action of compass. | attraction, repulsion, induction. |
| Terms: | magnetoscope, dip, declination, pole, retentivity, permeability, lodestone, magnetic meridian. | electroscope, electron, positive, negative, potential, capacity, condenser, electrophorus, oscillatory discharge, lightning. |
| Likeness: both are: | a—produced by induction, b—attract and repel, c—have fields of force. | |
| Differences: | a—electricity can be conducted, magnetism cannot. b—electricity in all substances, magnetism in few. c—magnetism with the compass indicates direction. | |