Which unit is used to measure electric power?

The unit used to measure electric power is watts. Power in the electrical context is defined as the rate at which energy is converted or transferred. One watt is equivalent to one joule per second, indicating that it measures the amount of energy used or produced over a certain time frame.

In contexts involving electrical applications, understanding that watts directly quantify power helps in assessing how much energy an electrical device consumes or generates during its operation. Other units mentioned have distinct purposes: joules measure energy, BTUs quantify heat energy, and volts measure electric potential. Therefore, watts are the most appropriate unit for indicating power in electrical systems.