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Instructor’s informal sessions:

• Tu 3:30-4:20pm, RAS 213.
• Fri 4-4:50pm, ECJ 1.204.

Lecture: 11 Capacitor & Dielectrics – III (iq07)

Revisit HW4: 17-21

Energy stored: U vs U’

• Fixed Q case
• Fixed V case

Energy density and permittivity in a dielectric medium

Capacitor with partially filled dielectric medium

Application of work energy theorem

Reminders and announcements:

• There is the regular Friday informal session today. See above for time and place.
• Monday class(2/16): Review unit 1.
• Wed class (2/18): Begin chapter 27. A simple question on the material covered in the class may be included in midterm 1. However, you are not responsible for HW5 in this midterm.
• Next week is the “midterm-week”, HW5 will be relatively short. It will be due at 4am of the following Tuesday, 2/24. The due time of hw6 will resume as per the regular schedule, see syllabus.

Preparation for the midterm:

• Course summary: It contains the basic formula you need to know. A fresh course summary will be distributed at the exam site. It is important for you to get familiar with it prior to the exam.
• The advice
• for preparing an exam and
• for taking an exam

are posted on the homepage