Discussion
Why is the current zero at the ends of a dipole?
Answer: A
Continuity requires that current vanish where the conductor ends, because there is nowhere for the charge to go. Charge accumulates instead, so the voltage is indeed a maximum there, but that is a consequence rather than the cause. Radiation resistance is a terminal quantity for the whole antenna and not a function of position, and the taper of the wire is irrelevant. The boundary condition at the ends is what forces the standing wave pattern along the whole element.
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