Before revision: In mathematical notation: The minus sign is not present in the relationship between electrical resistance and the analogue of conductance A similar relation holds when the impedance is reactance-free (admittance is susceptance-free ): If the imaginary unit is included, we get for the resistance-free case since, Applications High susceptance materials are used in susceptors built into microwavable food packaging for their ability to convert microwave radiation into heat.
After revision: In mathematical notation: The minus sign is not present in the relationship between electrical resistance and the analogue of conductance but otherwise a similar relation holds for the special case of reactance-free impedance (oradmittance susceptance-free ): If the imaginary unit is included, we get for the resistance-free case since, Applications High susceptance materials are used in susceptors built into microwavable food packaging for their ability to convert microwave radiation into heat.