Imagine you wanted to plug a device into an outlet on your wall, but you didn’t have a cord that reached all the way. Instead, all you had were short snippets of wire that, put together, weren’t enough to cover the distance between the device and the wall. Say you spread them out so they weren’t touching each other but traced a dotted line that spanned the whole distance. How would you overcome the gaps between the snippets to get electricity flowing?
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Source: Phys.org