%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.
In science, electrical energy is measured in joules. However, another unit of electrical energy, the kilowatt. hour (kW. h), is the amount of energy that is used by a load of exactly one kilowatt running for exactly one hour.he kilowatt.hour (kW.h). It is the amount of energy that is used by a load of exactly one kilowatt running for exactly one hour. The kW.h unit is used to measure the tota â¦ l amount of energy used in a building (a home, an office, a factory, etc.) over a particular period of time, usually one month or three months.