1. Physics Chp 19

2. Electric Current Movement of charge Ampere A = C/s

3. Conventional Current Direction positive charges would move Charge carriers

4. Drift Velocity The electric field moves at c but the actually electrons move slower

5. Sources of current Chemical Mechanical Nuclear

6. Direct Alternating

7. Resistance V = IR Ohms Ω V is potential and uses volts (V) I is current and uses amps (A)

8. Resistance depends on Length Cross-sectional area Material temperature

9. Power watts (W) P = E/t (J/s) P = IV

10. kWH Energy = P x t