Video Summary

Power is the rate at which work is done or energy is transferred. It is measured in Watts. One Watt is equal to one Joule per second. Power is all around us. We use it to power our homes, our cars, and our devices. The amount of power we use depends on the task we are trying to accomplish. We can calculate power using the equation: Power = Work / Time Work is measured in Joules and time is measured in seconds. Here are some examples of power: - A 60W light bulb uses 60 Joules of energy per second. - A 100W hair dryer uses 100 Joules of energy per second. - A 1000W electric stove uses 1000 Joules of energy per second.