Danger from electric shock
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I can describe mains electricity in the UK and the dangers of an electric shock.
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Mains electricity has a p.d. of 230 V between a live wire connection (230 V) and a neutral wire connection (0 V).
Mains electricity has alternating current at a frequency of 50 Hz.
Electric current passing through a person’s body can damage living tissue and/or stop their heart pumping blood.
The size of current from a shock depends on the p.d. across the person and the resistance of their skin (I = V ÷ R).
Wet skin has a much lower resistance than dry skin, and a smaller p.d. can cause a bigger current from a shock.
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