ch26-p074 - 74. (a) The potential difference between the...

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74. (a) The potential difference between the two ends of the caterpillar is Vi Ri L A == = ×⋅ × × −− ρ 12 169 10 4 0 10 52 10 38 10 82 3 2 4 Am m m/2 V. bg ch c h .. . . π (b) Since it moves in the direction of the electron drift which is against the direction of the current, its tail is negative compared to its head.
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