1. Solve for: RT, IT, I1, I2, I3, V1, V2, V3, P1, P2, P3
Warm-Up
Solve for:
RT, IT,
I1, I2, I3,
V1, V2, V3,
P1, P2, P3

2. Circuit Statement Rules Handout

3. Chapter 9 Powerpoint

4. Definitions:
Parallel – Both sides of one resistor must be connected to both sides of the other resistor
Series – resistors that share the same current

5. Solving for RT in a Combo Circuit
Combine all parallel resistors
2. Combine all series resistors
3. Repeat steps 1 and 2 until 1 resistor remains ^
obvious ^
obvious
Sometimes RT is called REQ

6. 33Ω =
500 Ω
33Ω
1kΩ
1kΩ
68Ω
Req = =
16.5 Ω
= 970
970Ω =
313.3Ω
56Ω
470Ω
820Ω
350Ω
100Ω =
245.3 Ω +
289.2 Ω + = =
35.9 Ω =
236.8 Ω

7. See “Solving for RT in a Combo Circuit” Handout
Find RT
Find IT
What other circuit value do you know without doing any math?

8. See “Solving for RT in a Combo Circuit” Handout
Find RT
Find IT
What other circuit value do you know without doing any math?

9. See “Solving for RT in a Combo Circuit” Handout
Find RT
Find IT
What other circuit value do you know without doing any math?

10. See “Solving for RT in a Combo Circuit” Handout
Find RT
Find IT
What other circuit value do you know without doing any math?

11. See “Solving for RT in a Combo Circuit” Handout
Find RT
Find IT
What other circuit value do you know without doing any math?
DO THIS USING CURRENT DIVIDER FORMULA

12. See “Solving for RT in a Combo Circuit” Handout
Find RT
Find IT
What other circuit value do you know without doing any math?

13. See “Solving for RT in a Combo Circuit” Handout
Find RT
Find IT
What other circuit value do you know without doing any math?

14. See “Solving for RT in a Combo Circuit” Handout
Find RT
Find IT
What other circuit value do you know without doing any math?

16. R5 R8 R6 R1 R7 R4 R2 R3 Find Req by redrawing circuit R1 = 20 R2 = 40

17. R5 R8 R6 R5 R1 R7 R4 R2 R3 R1 R6 R4 R8 R2 R3 R7 R1 = 20 R2 = 40
Req = 20 ohms

18. R5 R8 R6 R1 R7 R4 R2 R3
You can move this wire to here instead of between here and it makes for another fun problem

19. Find RT

20. RVOTD http://www.youtube.com/watch?v=W1czBcnX1Ww

21. Lecture: Solving all parameters in a combo circuit. (On whiteboard)
Solve for all the parameters in this circuit.
Go over troubleshooting to prepare for lab.

22. Reminder: Test 2 is will be two sessions from now

23. Do Combo Circuit Worksheet
Homework: See Syllabus
Combo Circuit Worksheet
&
Page 180 Problems 5, 6, 7, 8