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Chapter 15

Chapter 15. Physics A First Course. Electricity. Electricity Electrical Charges and Forces . 15.1 Electric Charge and Current 15.2 Electric Current, Resistance, and Voltage 15.3 Capacitors. Key Question: What is "static" electricity ?. 14A Investigation: Electric Charge.

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Chapter 15

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  1. Chapter 15 Physics A First Course Electricity

  2. ElectricityElectrical Charges and Forces • 15.1 Electric Charge and Current • 15.2 Electric Current, Resistance, and Voltage • 15.3 Capacitors

  3. Key Question: What is "static" electricity? 14A Investigation: Electric Charge *Students read text section 15.1 AFTER Investigation 15A

  4. 15A Investigation Topics • Observe electric charge. • Build an electroscope. • Charge electroscope with objects. • Observe behavior of electroscope.

  5. Distinguish between a positive and negative net charge. Explain the meaning of Coulomb's law. Describe different ways of charging an electroscope. Chapter 15.1 Objectives and Vocabulary • coulomb • electrically neutral • charged • static electricity • Coulomb's law • electroscope • charging by contact • charging by friction • polarized • charging by induction

  6. Key Question: How many electrons move when current flows? 15B Investigation: The Flow of Electric Charge *Students read text section 15.2 AFTER Investigation 15B

  7. 15B Investigation Topics • Build electric circuits. • Use resistors. • Measure voltage. • Use potentiometers. • Use capacitors. • Measure current. • Graph current vs. time. • Calculate flow of charge. • Estimate number of electrons flowing in a current. • Calculate number of electrons flowing in a current.

  8. superconductor Describe the relationship between electrons and current. Explain, at the atomic level, the difference between insulators, semiconductors, and conductors. Identify how voltage and charge are related. Chapter 15.2 Objectives and Vocabulary

  9. kilowatt Calculate power in a circuit. Calculate the cost of running an appliance. Distinguish between alternating and direct current. Chapter 15.3 Objectives and Vocabulary

  10. Three Factors Determine Capacitance

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