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Answer Posted / navya.suryadevara
ground is a reference point of measurement
earth is a common ground.
"I want to establish in your mind very clearly that you
must not think I deny all that I do not admit. On the
contrary, I think there are many things which may be true,
and which I shall receive as such hereafter, though I do not
as yet receive them; but that is not because there is any
proof to the contrary, but that the proof in the affirmative
is not yet sufficient for me"
- Michael Faraday
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