8. (a) Below, we graph Eq. 28-4 (scaled by a factor of 100) for E =2 . 0V and r = 100 Ω over the range0 ≤ R ≤ 500 Ω. We multiplied the SI output of Eq. 28-4 by 100 so that this graph would not be vanishingly small with the other graph (see part (b)) when they are plotted together. (b) In the same graph, we show V R = iR over the same range. The graph of current i istheonethat starts at 2 (which corresponds to 0 . 02 A in SI units) and the graph of voltage
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