Discussion
What is a Hertzian dipole?
Answer: B
The Hertzian or elementary dipole is an idealised element so short that the current may be taken as constant along it, and it serves as the building block from which any wire antenna is assembled by integration. Real short antennas have a current tapering to zero at the ends, which is why their effective length is half the physical length. A half wave dipole, an end fed wire and a crossed pair are all specific practical antennas rather than this abstraction.
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