1. Extra Credit Lecture Gary C. Meyer, Instructor

2. Basic Electricity Electrical Terms and Units Electromotive Force – Volts Current – Amperes Resistance – Ohms Power - Watts Ohms Law Simple Circuit Symbols Simple Circuit Calculations The Wheel – Next Slide

3. Review of Ohms Law/Power Formulas E = IR I = E/R R = E/I P = EI P = I 2 R P = E 2 /R

4. Series Resistors R(Total) = R1 +R2 + R3 Example: R1 = 5Ω E = 10 v I =

5. Series Resistors R(Total) = R1 +R2 + R3 Example: R1 = 5Ω R2 = 2Ω R3 = 6Ω R (Total) =

6. Series Resistors R(Total) = R1 +R2 + R3 Example: R1 = 5Ω R2 = 2Ω R3 = 6Ω E = 13 volts

7. Series Resistors R(Total) = R1 +R2 + R3 Example: R1 = 5Ω R2 = 2Ω R3 = 6Ω E = 13 volts I = ?

8. Series Resistors R(Total) = R1 +R2 + R3 Example: R1 = 5Ω R2 = 2Ω R3 = 6Ω E = 13 volts I = 1 amp V1 = V 2= V3=

9. Series Resistors R(Total) = R1 +R2 + R3 Example: R1 = 5Ω R2 = 2Ω R3 = 6Ω E = ? volts I = 2 amp V1 = V 2= V3=

10. Series Resistors R(Total) = R1 +R2 + R3 Example: R1 = 5Ω R2 = 2Ω R3 = 6Ω E = 26 volts I = 2 amp P 1= P2= P3=

11. Optional – Extra Credit JPG File