Another Resister example : find all the voltages and currents…

1. Another Resister example: find all the voltages and currents… Clever hippie way Kirchhoff’s method

2. Another Resister example: find all the voltages and currents… Clever hippie way

3. Another Resister example: find all the voltages and currents… b) Now try Kirchhoff's method The procedure …

4. Another Resister example: find all the voltages and currents… 1.) Define currents

5. Another Resister example: find all the voltages and currents… 2.) use node law to reduce variables

6. Another Resister example: find all the voltages and currents… 3.) use loop laws to get equations Solve em ….

7. Another Resister example: find all the voltages and currents… 4.) Solve em.

8. Recall Capacitors?

9. Capacitors in circuits (DC)

10. Equivalent Capacitors: Parallel connection

11. Equivalent Capacitance?

12. Parallel capacitors Same voltage!

13. Equivalent Capacitors: Series connection.

14. Equivalent Capacitance ? External charge stored

15. Equivalent Capacitance ?

16. Series capacitors Same charge!

17. NOTE: The Rules for combining series and parallel capacitors are BACKWARDS from The Rules for combining series and parallel resistors !

18. Number example ( all C = 10 mF)

28. Parallel EXAMPLE

29. Series EXAMPLE Next page room

31. RC Circuits – time behavior!

32. t = 0, switch just closed CHARGING

33. t1: Now some time has passed CHARGING

34. t2: Now a lot of time has passed CHARGING

35. CHARGING

36. CHARGING

37. CHARGING Number example: What are the voltages across R and across C at a time t = 0.010 s after the switch is closed? Next page

39. DISCHARGING RC Circuits – time behavior!

40. DISCHARGING RC Circuits – time behavior!

41. DISCHARGING

42. DISCHARGING

43. DISCHARGING Number example: What are the voltages across R and across C at a time t = 0.010 s after the switch is closed? Next page