A positive connection is one in which a change (increase or decrease) in some variable results in the same type of change (increase or decrease)in a second variable. The positive connection in the figure below for a cooling coffee cup implies that the hotter the coffee is the faster it cools.
The power consumption of small devices is usually measured in Watts, and the power consumption of larger devices is measured in kilowatts (kW), or 1,000 Watts. Electricity generation capacity is often measured in multiples of kilowatts, such as megawatts (MW) and gigawatts (GW).
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.