What are amps watts volts and ohms Three

What are amps, watts, volts, and ohms?

Three most basic units in electricity: • Voltage • Current • Resistance

• Voltage is measured in volts • Current is measured in amps • Resistance is measured in ohms

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

• 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

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

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

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

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