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Homework Statement
Consider having a battery, its voltage lets say 20 volts. If you connect this battery to a wire. Its resistance is zero.
If you precisely measure the voltage at the end of the wire, Would it equal 20 volts or no?
Homework Equations
dV = I R
The Attempt at a Solution
Well using Ohm's law,
##\Delta V = I R ##
##\Delta V = I ~\text{x} ~ 0##
##\Delta V = 0##
Which means the voltage will be the same..
However, Shouldn't when a positive test charge move away from the positive terminal it lose potential energy? Why this result contradicts the previous one?
If it is the same, then you are exerting a force on an electron or ( a positive test charge) over a distance which means that you are creating energy from nothing
Or does the first result mean that you don't lose energy because of the wire? and Should I think it as a sea of electrons better to understand the perspective under this?
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