Conservation and dissipation of energy key terms

Efficiency

The ratio of useful energy or power output to total energy or power input, expressed as a decimal or percentage.

Useful energy

The portion of energy transferred that performs a desired work or function, as opposed to energy lost as heat or other less useful forms.

efficiency

A measure of how much useful energy is obtained from a system compared to the total energy input.

decimal efficiency

A way of expressing efficiency as a decimal value between 0 and 1.

Efficiency

The ratio of useful energy output to total energy input, expressed as a percentage.

Useful energy

The portion of energy that performs a desired work or function in a system.

efficiency

A measure of how much useful energy or power is obtained from a system compared to the total energy or power input.

percentage efficiency

A way of expressing efficiency as a fraction of 100, calculated by multiplying the decimal efficiency by 100.

energy transfer

The process of moving energy from one place or form to another.

perfect efficiency

A theoretical condition where all energy input is converted to useful energy output without any losses.

useful energy transfer

Energy that is transferred in a way that accomplishes a desired task or function.

wasted energy transfer

Energy that is transferred in a way that does not contribute to the intended task, often dissipated as heat.

efficiency

A measure of how much useful energy output is obtained from the total energy input.

wasted energy

Energy that is not used for the intended purpose and is often dissipated into less useful forms.

unwanted energy transfers

Energy transfers that do not contribute to the intended purpose of a system, leading to inefficiency.

efficiency

A measure of how much useful energy output is obtained from the total energy input, often expressed as a percentage.