In case of fire due to electric short circuit, which one of the following types of fire extinguishers is used ?

Electrical fires (often categorized as Class E) involve energized electrical equipment. For such fires, it is critical to use a non-conductive extinguishing agent to prevent the operator from being electrocuted. Dry chemical powder (DCP) extinguishers are highly effective because the powder is non-conductive and works by smothering the fire and breaking the chemical chain reaction. In contrast, pressurized water and foam extinguishers are primarily water-based. Since water is a conductor of electricity, using these on a live electrical short circuit can lead to severe electric shocks and may cause further short-circuiting. While Carbon Dioxide (CO₂) extinguishers are also preferred for electrical fires as they leave no residue, among the provided options, the dry chemical powder extinguisher is the appropriate choice.