Question

What is the SI unit system for power?

Answer 1

The SI unit for power is the watt (W). It is defined as one joule per second (J/s).

In simple terms, power measures how much energy is used or produced over a period of time.

1. 1 watt (W) = 1 joule per second (J/s)
   

This means if something is using or producing 1 joule of energy every second, it has a power of 1 watt. Power can be calculated in electrical systems as:

\[
P = V \times I
\]

Where:

1. P is the power in watts,
   

1. V is the voltage in volts,
   

1. I is the current in amperes.
   

So, if you have an electrical device using 1 volt and 1 ampere, it is consuming 1 watt of power.