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How about energy per unit charge?
Does this mean that the kinetic energy per unit charge of charged particle
in an beam passing through a surface is voltage?
In the example given of the cut conducting ring in an increasing magnetic
field, inside the material of the conductor the tangential (azimuthal
component of the net electric field is everywhere zero. Thus, for a path
staying within the conductor from one side of the cut to the other the
voltage difference is zero. Correct?
Does the voltage of a battery differ from the
terminal potential difference?
It does not differ in ordinary situations, such as situations where
Kirchhoff's laws apply.
The terminal potential difference ?V is equal to the emf - Ir, where r is
the internal difference and I is the current. The voltage between the
terminals is also equal to the emf Ir, but we cannot write this without
using the term emf, or can we? How is this relation expressed without using
the emf word?