Since a resistor is a passive element, the proper current–voltage relationship is illustratedin Fig. 2.1a. The power supplied to the terminals is absorbed by the resistor. Note that thecharge moves from the higher to the lower potential as it passes through the resistor andthe energy absorbed is dissipated by the resistor in the form of heat. As indicated in Chapter 1,the rate of energy dissipation is the instantaneous power, and therefore
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