Earth as return path or ground

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iVenky

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I read that Earth can act as a return path for the current and hence to complete the circuit. This seems to be so ridiculous. Does that mean if a current say 10 A is flowing in a wire and if end in the ground then the same current will flow through the other end of the circuit ? and this current comes from the ground at the other end?

Thanks in advance.
 

some interesting stuff h**p://en.wikipedia.org/wiki/Lightning
 

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