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| When E is equal to v × B, that
| is the condition for zero net force on the electrons. Any
| steady straight-line current meets this condition, whether
| the current is zero or not, and whether the resistance is
| zero or not.
Yes the net force is zero, but if there is resistance one of the forces is
a retarding force. Consider the limit when this retarding force becomes
irresistible (the rod is an insulator). Then no charges move or
accumulate; no E is established; yet qVxB still operates - balanced
completely by the retarding force.