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How come low frequency current needs a return path but high frequency current does not?
Wiki User
∙ 11y ago
The higher the frequency the lower the impedance is in air, vacuum or other insulation. High frequency usually finds its return path via stray capacitance. Some part of the energy is radiated by the conductors, as they form an antenna, even if not intended to do so. In this case the antenna impedance provides the return path.
Wiki User
∙ 11y ago
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