1. What are amps, watts, volts, and ohms?

2. Three most basic units in electricity: Voltage Current Resistance

3. Voltage is measured in volts Current is measured in amps Resistance is measured in ohms

4. Electrical system Vs. Plumbing System Voltage is equivalent to water pressure Current is equivalent to the flow rate Resistance is like the pipe size

5. Current (amps) = Volts / Resistance A = V / R If you want more electricity to come out of the wire, then either increase the pressure, or make the wires bigger Increasing the voltage will make more current flow

6. Im rick james Power consumed by the resistance in electrical wires increases as the current going through the wires increases Using higher voltage to reduce the current can make electrical systems more efficient

7. Wattage = Electrical Power Watts = Volts * Amps W = VA Electrical power = Voltage * Current P = VI

8. 1,000 watts = 1 Kilowatt Kilowatt-hours = Usage of 1 kilowatt for one hour 1,000 watt-hours = 1 kilowatt hour

9. Improvement in Efficiency Carmakers are moving toward a 42-volt electrical system from the current 12-volt systems. This change will help cars meet the greater electrical demand placed on them without having to increase the size of the wires and generators to handle the greater current