o Course homepage, Ongoing Lectures, TT-system 

• Instructor’s weekly informal sessions:

Tu 3:30-4:20, RAS 213 ; Fri 4-5, RLM 5.104

Lecture: 16 Direct Current Circuits - II

Emf and terminal potential difference of a battery (revisit)

• R>>r case
• R<<r case

Circuit problems beyond series and || connections

• Loop equations: Potential differences across battery and R
• Node equation: No traffic jam rule
• Two special cases:

o Identical emf-2 = emf-1, R2=R1

o R3 = infinity (open circuit)

• General case.

o Standard solution for 2equations-with-2unknowns.

o Consistency checks.

RC circuit

• Circuit for charging a capacitor: Loop equation.
• Temporal evolution of the current and the plate-charge

· Qualitative behavior

· Quantitative behavior: The algebraic solution

Reminder:

• There is the regularly instructor’s informal section on Friday, see time and place above.

• Contact instructor:

o MWF after class. Office hours: MW 12:50-1:30.

o TuFr after the instructor’s informal sessions:

· Tu4:20… RAS213

· Fr4:50… RLM5.104

o By email:

· Remember to include “303L” on the subject line.

· During week days, if I have not responded your email within 24hrs, I might have accidentally overlooked your email. To be sure that I get your email, please send it again. Include “303L” on the subject line.

o If you would like to discuss your performance in this course, please bring your work, when you come.