So in England we have the ground prong so our cables are all the same, however I know in the states and other places they don’t, so how come no damage is caused if the positive and negative are the wrong way around?
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The easiest way to visualize it is to think of water. DC electricity, like you’d get from a battery is like a steam of water. The charges flow in one direction.
AC electricity that you’d get from the outlet works differently. The water moves forward, then moves back again. The charges are pushed from one prong, through the appliance, to the other prong. Then the flow reverses. This reversal happens 50/60 times a second (50/60 Hz).
So each prong on the plug accepts charge coming into it and charge being pushed out of it. Therefore, you can plug it in either way, and it’ll be fine.
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