CONCEPTS OF ELECTRICAL PROCESSES (2)

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Refer to the Chapter of Processes and Energy

7

When charge flows from a point of higher to a point of lower electric potential, energy is released at a rate proportional to the flow of charge and to the potential difference (electric power). The energy released is used in follow-up processes, for example in motors or pumps.

In involuntary electric processes, we need energy to drive a flow of electric charge from a lower to a higher potential. Devices that let us do this are fuel cells, batteries or generators. When we do this, we create potential differences.

8

If charge is added to a body (in conductive transfer), energy is added at a rate proportional to the flow of charge and to the electric potential of the body.

9

Energy can be stored together with charge in electric capacitors. The energy stored depends upon the charge (and therefore upon the voltag) of the capacitor, and upon the properties of the capacitor.

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