## Chapter 32: Alternating Current Circuits

### Study Plan

As we learn about AC circuits, we will consider such questions as:

• For the “115-V AC” emf supplied at ordinary outlets in homes, what are the actual maximum and minimum emf? What is the relation between the resistance and the time-average power dissipated in a lightbulb or other resistive device connected to such an outlet? (Section 32.1, pages 1031 and 1033; Example 1, page 1034)
• How does a “dimmer” control the power delivered to a lightbulb? (Example 5, page 1049)
• How does a transformer step up or step down an alternating emf? An alternating current? (Section 32.6, page 1055; and Example 8, page 1056)

#### Organize

1. Prepare for lecture by reading the assigned sections from Chapter 32 in your textbook or ebook. This will provide an organizing framework for concepts introduced in lecture, and help you take better notes.
2. Take the checkup quiz and work the Checkup questions in your textbook to assess your understanding of basic concepts. Take note of any topics you need to review further.
3. Review the Examples from your textbook. These progress from simple to complex, and provide concrete illustrations of the concepts discussed.

#### Learn

2. Access the Online Concept Tutorials given for this chapter. Tutorials use animation and interactive exercises to help develop your understanding of fundamental topics.
AC Circuits
Sections: 32.1, 32.2, 32.3, 32.5
3. Use the FlashCards to test your memory for new key terms and equations.
4. Work the end of chapter Problems and Review Problems assigned by your instructor. If your instructor has assigned SmartWork online homework, login from the right navigation pane.

#### Connect

1. Throughout the text Physics in Practice boxes explore real-world applications of core concepts in specific detail. In Chapter 32 see:
 Physics in Practice: Frequency Filter Circuits
2. Physics in the News offers additional real-world physics applications, and a daily dose of science-based news.