1. Chapter 6 Ohm’s Law, Work, Energy and Power

2. 16 V

3. 8 V

4. 1 V

5. 16 uV

6. 7 V

7. 20V

8. V = ? V I = 3 mA R = 2 k Ω 6V

9. V = ? V I = 5 nA R = 1.5 G Ω 7.5V

10. V = ? V I = 5 A R = 1.5 Ω 7.5V

11. V = 6 V I = 3 A R = ? Ω 2 Ohms

12. V = 6 V I = 3 A R = ? K Ω.002 Kohms

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14. Now Use your Calculator See page 91 in book Do Example 6.2

15. V = 6 V I = ? A R = 3 Ω Using your Calculator 2 Amps

16. V = 6 V I = ? mA R = 3 Ω Using your Calculator 2000 mA

17. V = 10 mV I = 2 mA R = ? m Ω Using your Calculator 5000 mOhms

18. V = 10 mV I = 2 mA R = ? Ω Using your Calculator 5 Ohms

19. V = 10 mV I = 2 mA R = ? M Ω Using your Calculator.000005 MOhms

20. V = 10 x 10 -4 V I = 2 mA R = ? M Ω Using your Calculator.0000005 MOhm 5 x 10^-7 MOhm

21. V = 10 x 10 -4 V I = 2 x 10 -3 A R = ? M Ω Using your Calculator.0000005 MOhm 5 x 10^-7 MOhm

22. Work What is work? Motion must take place for work to take place What is the unit for work? Joule (J) (This is also the same unit for Energy) Work takes place when electrical energy is converted to mechanical energy and vice versa What about electrical work? (no motion involved?) 1 Joule = Energy required to raise 1 Coulomb of charge through a potential difference of 1 Volt

23. Work What is the equation for work? W = Q * V Work = Charge * Voltage Joules = Coulombs * Volts

24. Power What is Power? W = Q * V Power is how much work can be done in a specific amount of time (Like MPH) Units for Power is Watts (W) (Like MPH)

25. Power Equation for Power Power = Voltage * Current (Like MPH)Power = Work / Time P = V * I

26. Power See how Power also equals: P = V 2 /R P = I 2 * R

27. Power P = ? Watts I = 6 Amps V = 3 Volts P = V 2 /R P = I 2 * R P = V * I P = 18 Watts

28. Power P = 18 Watts I = 6 Amps V = 3 Volts P = V 2 /R P = I 2 * R P = V * I R = ? Ω R =.5 Ohms

29. Power P = ? Watts I = 5 Amps V = ? Volts P = V 2 /R P = I 2 * R P = V * I R = 10 Ohms P = 250 Watts V = 50 Volts

30. Power P = ? Watts V = 3 Volts P = V 2 /R P = I 2 * R P = V * I R = 9 Ω P = 1 Watts

31. Power P = 32 Watts P = V 2 /R P = I 2 * R P = V * I R = 2 Ω I = ? A I = 4 Amps