What are amps, watts, volts, and ohms?

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What are amps, watts, volts, and ohms?
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Three most basic units in electricity

• Voltage
• Current
• Resistance

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

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Electrical system Vs. Plumbing System

• Voltage is equivalent to water pressure
• Current is equivalent to the flow rate
• Resistance is like the pipe size

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• 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

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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

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

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

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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