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6 (a) Briefly develop a mathematical model of the behaviour of a copper-twisted pair cable (b) Derive the magnetic energy from: w given that:

6 (a) Briefly develop a mathematical model of the behaviour of a copper-twisted pair cable (b) Derive the magnetic energy from: w given that: K + w, where the - - k symbols have their usual meaning (c) Sketch the graphical relationship between esistance and frequency from the model of question

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