Understanding Ohms Law

Ohms Law states that I = V / R. When I is measured in amperes and V in volts, the units of the electrical resistance R are known as ohms. A voltage of 1 volt, faced with a resistance of one ohm, will drive through it a current of one ampere.

When applying Ohms Law to electric heating elements, the following statements explain the relationships between power (watts), current (amps) and voltage.
  • Watts = Volts x Amps
  • Amps  = Watts / Volts 
  • Volts = Watts / Amps 
The following video provides a deeper understanding of Ohms Law.