In electromagnetism, when a current of one ampere flows through a potential difference (voltage) of one volt, the rate at which electrical work is done is said to be one watt.

Thus, the volts amps watts formula can be written as,

Watts = volts x amps

This formula is used to convert watts to volts and explains the power and voltage relation. This is how we can replace volts and amps to watts.

Volt can also be expressed in ampere x ohm, Webbers / sec, watts / ampere, or Joules / coulomb.