Electrostatic Potential
Electricity and Magnetism

Electric extinguishers

Stories from Physics for 11-14 14-16 IOP RESOURCES

It is not uncommon for a user to receive a small shock when they touch a grounded conductor after discharging a carbon dioxide fire extinguisher. This is because charge can be transferred by the motion of the dry ice particles through the nozzle. As an extinguisher is likely to be used in a potentially explosive environment, it is recommended that discharge nozzles are grounded before use as an extinguisher can develop a potential of up to 30 kV during discharge.


Electrostatic Potential
is used in analyses relating to Electric Field
can be analysed using the quantity Work
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