How can a live wire still be dangerous if the switch is open?

Hi. My exam board s specification says the following which I don t really understand: Know that a live wire can still be dangerous even if the switch is open ... How can this be possible? (Current doesn t flow is it is open). Could someone please explain this to me? (All I can guess is: would it be the short time... show more Hi. My exam board s specification says the following which I don t really understand: Know that a live wire can still be dangerous even if the switch is open ... How can this be possible? (Current doesn t flow is it is open). Could someone please explain this to me?
(All I can guess is: would it be the short time between the switch being closed, then opened, where current would still be flowing to the appliance so the live wire will still dangerous!)
Thank you
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