Unformatted text preview: enough V 2 ) will result in a negative value for i 1 – so the downward sloping line (the line that is dashed in Fig. 2747(b)) must represent i 1 . It appears to be zero when V 2 = 6 V. With i 1 = 0, our loop rule gives V 1 = V 2 which implies that V 1 = 6.0 V. (b) At V 2 = 2 V (in the graph) it appears that i 1 = 0.2 A. Now our loop rule equation (with the conclusion about V 1 found in part (a)) gives R 1 = 20 Ω ....
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 Spring '08
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 Physics, loop rule

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