1. Series and Parallel Circuits
Textbook: 16.6
Homework: WS
A series circuit has one path for the current to follow.
A parallel circuit has more than one path for the current to follow.

2. Pg 547

3. Kirchoff’s Laws
Current Law: The total current into a junction equals the total current out of a junction
Voltage Law: The total voltage drop in a closed loop must equal the voltage increases in the same loop
Derive Series Circuit Formula
Derive Parallel Circuit Formula

4. Find the missing variables
(c)
(a) V0 = 6.0 V
(b) V1 = 2.0 V
(c) V1 = 6.0 V, V2 = 6.0 V, I2 = 0.7 A, I3 = 1.5 A
(a) V0 = 6.0 V
(b) V1 = 2.0 V
(c) V1 = 6.0 V, V2 = 6.0 V, I2 = 0.7 A, I3 = 1.5 A

5. Find the missing variables: V2, V4, I3, and I4
V2 = 3V, V4 = 9V, I3 = 1A, I4 = 4A
V2 = 3V, V4 = 9V, I3 = 1A, I4 = 4A

6. Series and Parallel
Series Circuit:
Parallel Circuit:
Pg #1, 3, 4

7. Keep in Mind… Voltage Current Series Adds VT = V1+V2+…VN Is the Same
IT = I1 = I2 =…=IN
Parallel
VT=V1=V2= …= VN
IT = I1+I2+…+IN

8. For resistors of 10 Ω, 15 Ω, and 20 Ω, two of the resistors are connected in parallel and in series with a third one. Calculate the possible total resistance values.
[26 Ω, 21.7 Ω, 18.6 Ω]