Power is measured in watts and horsepower and is used to calculate the rate at which work is done.
Would you rather use a lawnmower or a pair of scissors to cut your lawn grass? A lawnmower would most likely be the answer. What is the reason for this? The lawnmower will complete the operation in a fraction of the time and thus offer you more power. But, exactly, what is power? Let's take a closer look at this.
Power is a metric that is measured over a period of time, which has something to do with how quickly work is completed. The formula for calculating power is given below.
Where W is the work and T is the time, and P is the power.
There are two sorts of power: instantaneous and average.
In just 7 seconds, a microwave oven can produce 7,000 joules of energy. What is its power?
Using the formula of power, which is P= W/T, we can get the power of the microwave.
Power = work / time = 7000J / 7s = 1000 watt .
Q. What is power?
Power is the rate at which work is completed.
Q. How do you calculate energy from power?
Energy is the product of power with the length of the time it was consumed.
Q. How are work energy and power related to each other?
Power is the ratio of work energy and the length of time it was consumed.
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