OHMS LAW

1. E I R OHMS LAW

2. OHMS LAW • Ohms Law states that there is a Direct Relationship to Circuit Voltage and an Inverse Relationship to Circuit Resistance. • CURRENT flow depends on Voltage and Resistance.

3. OHMS LAW • CURRENT FLOW is determined by how much RESISTANCE is present in the circuit. • OHMS LAW simply put states that there is a predictability that allows us to calculate the behavior of Electricity.

4. OHMS LAW • ASSUMING RESISTANCE IS STABLE: • AS VOLTAGE INCREASES: • CURRENT INCREASES • AS VOLTAGE DECREASES: • CURRENT DECREASES • Successful students will memorize this DIRECT RELATIONSHIP!!!!

5. OHMS LAW • ASSUMING VOLTAGE IS STABLE: • AS RESISTANCE INCREASES: • CURRENT DECREASES • AS RESISTANCE DECREASES: • CURRENT INCREASES • Successful students will memorize this INVERSE RELATIONSHIP!!!!

6. OHMS LAW • PERFECTLY CLEAR RIGHT????? • If not, let’s spend a moment in review.

7. OHMS LAW • VOLTAGE is ELECTROMOTIVE FORCE PRESSURE WITHIN THE CIRCUIT. • AMPERAGE is CURRENT, INTENSITY or FLOW • OHMS is RESISTANCE TO FLOW

8. E I R OHMS LAW • E= VOLTAGE • I= AMPERAGE • R=RESISTANCE

9. E I R OHMS LAW • WESTERMEYER’S LAW • K.I.S.S. Principal Rules! • Keep • It • Simple • STUDENT

10. E I R OHMS LAW • WESTERMEYER’S LAW • Ohms Law is similar to a Homicide Case: • Use that which you do know, to discover that which you don’t know.

11. E I R OHMS LAW • E=I X R • R=E÷I • I=E÷R

12. E I R OHMS LAW

13. E I R OHMS LAW • VOLTAGE UNKNOWN • E=I X R • E= 6A X 2Ω • E= 12Volts

14. E I R OHMS LAW • RESISTANCE UNKNOWN • R=E÷I • E= 12V÷6A • R= 2Ω

15. E I R OHMS LAW • AMPERAGE UNKNOWN • I=E÷R • I= 12V ÷ 2Ω • I= 6A

16. E I R OHMS LAW • LET’S • PRACTICE

17. P I E WATT’S LAW • P= POWER IN WATTS • I= CURRENT • E= VOLTAGE

18. P I E WATT’S LAW • SOLVE FOR WATTS THE SAME AS FOR OHMS • COVER THE UNKNOWN AND SOLVE USING THE KNOWN