1. Chapter 17: Electric Charge and Electric Field
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2. Goals for Chapter 17
To study electric charge, conductors, and insulators.
To understand Coulomb's law and solve some example problems.
To understand electric fields.
To calculate electrical forces.
To map out electric field lines.
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3. Electrical Charges are All Around Us
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4. Exploring the Nature of Electrical Charge − Figure 17.1
Plastic, silk, rubber, glass and fur can reveal fundamental behaviors of charge.
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5. Atomic Charge Arrangements – Figures 17.2 and 17.3
Protons (+) and electrons (−) account for atomic charges.
Electrons move; protons don't.
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6. Charge Movement by Conduction – Figure 17.4
Direct contact
Charge moves through a conductor.
Metals are good conductors.
Non-metals are most often not.
Discuss insulators.
Discuss semiconductors.
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7. Charging by Induction – Figure 17.5
If attracted or repelled, the electrons inside an object may be polarized.
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8. Static Affects Even Uncharged Objects –Figure 17.6
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9. Polarization (the Paper and the Comb) –Figure 17.8
Induced charges are present in the everyday examples.
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10. Polarization Determines Induced Charge –Figure 17.7
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11. How Coulomb Measured the Force – Figure 17.9
Read through the text on pages 531 to 537.
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12. Electrical Force – Examples 17.1 and 17.2
Refer to Problem Solving Strategy on page 534 then try Examples 17.1 and 17.2.
The problems build complexity in layers, so be sure to do these two!
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13. Forces are Additive – Example 17.3
Refer to Example 17.3 on page 536 and Figure
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14. Forces are Additive Even if Non-Linear –Example 17.3
Refer to the Example 17.4 on page 537 and Figure
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15. Mapping out the Electrical Field – Figures 17.15 and 17.16
Moving the test charge can allow forces to be measured.
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16. Force Causes Acceleration – Example 17.5
Refer to Example 17.5 on page 539 and Figure
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17. Calculating the Electric Field – Example 17.6
Refer to Example 17.6 on page 541 and Figure
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18. The Field Around a Dipole – Example 17.7
Refer to Example 17.7 on pages 542−543 and Figures and
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19. The Electric Field is Mapped – Figures 17.23 and 17.24
Refer to the characteristics at the bottom of page 543.
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20. The Field Formed Related to the Electrode – Figure 17.25
Refer to the text in the middle of page 544.
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