Two metal plates are charged such that there is a 10 V potential difference between them.  A positive charge is to be moved from the lower plate to the top plate. Starting from the point on the lower plate, following which path to the top plate will we do the least work moving the charge?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.