In case of a fire before the firemen use the water hoses they shut off the main electrical supply for the area Explain why they do this cbse class8 physics 2015

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In case of a fire, before the firemen use the water hoses, they shut off the main electrical supply for the area. Explain why they do this. cbse-class8-physics-2015

cbse-class8-physics-2015

Asked On2017-07-26 05:57:49 by:13priya

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Water usually contains salts and conducts electricity. If the electrical supply is not cut off and firemen come in contact with wet electric switches, electric wires and other electrical appliances, they may get electrocuted. So, the electrical supply is cut off to prevent electrocution of firemen.

Concept insight: Ordinary water is a good conductor of electricity.

Answerd on:2017-07-27 Answerd By:Fututron

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In case of a fire, before the firemen use the water hoses, they shut off the main electrical supply for the area. Explain why they do this. cbse-class8-physics-2015

cbse-class8-physics-2015

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