1. Resistors in Parallel Chapter 20-2 (Pages740-745)

2. Resistors in Parallel Parallel-circuit (or part of) where components are connected across common points and provides separate conducting path. There are three different ways to get from A to B

3. Resistors in Parallel  Gives multiple alternate pathways for current flow

4. Resistors in Parallel Resistors in parallel have same ΔV across them The sum of currents in parallel resistors = total current I= (I 1 + I 2 + I 3 +…) Resistors in parallel 1 = 1 + 1 + … R eq R 1 R 2 ΔV = I●R eq

5. Resistors in Parallel Advantages of parallel 1. Parallel circuits do not require all elements to conduct 2. One part can malfunction and the rest will continue to work 3. Potential difference does not change for all components when one component fails  Allows for standardization of products  Allows manufacturers to regulate current through a product by resistors  Home wired in parallel

6. Resistors in Parallel Disadvantages of parallel – 1. Current will change if one component fails 2. Current different in all components

7. Resistors in Parallel Homework: p. 744 #2-4 p. 745 #1,3, 4b, 4d, 5b

8. Resistors in Parallel Turn to page 741 for “Quick lab”