%displayPrice% at %seller% The Lenovo B50 is a midrange all-in-one desktop PC that's made to keep even enthusiast-level users happy for a few years.
Energy is an amount, while power is a rate at which energy is used. Energy is measured in watt-hours (WÂ·h) or joules (J). Power is measured in watts (W) or joules per second (J/s). Watt-hours are like buckets, and watts are like buckets per hour. If you have 5 buckets of energy and you pour one bucket per hour, you'll be able to pour for 5 hours before you run out.
The currency for performing work is called : Energy. And Energy's unit of measurement is : Joule. The amount of energy you've inputed will always equal the output. For example, in order to do a 500 joules of work, you need 500 joules of energy.