Answer :

Final answer:

Class C fire extinguishers, such as CO2 extinguishers, should be used on electrical fires like desktop PCs. It is important to unplug or disconnect the electrical source before using the extinguisher.

Explanation:

The class of fire extinguisher that should be used on electrical fires, such as desktop PCs, is Class C. Class C fire extinguishers are designed to extinguish fires involving electrical equipment by using non-conductive agents.

A common type of Class C fire extinguisher is the CO2 (carbon dioxide) extinguisher. Carbon dioxide is effective in suppressing fires on electrical equipment as it removes oxygen from the fire, thereby extinguishing it.

When using a fire extinguisher on an electrical fire, it is crucial to unplug or disconnect the electrical source before attempting to extinguish the fire. This will help prevent electrical shock or injury.

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