Consider a rectangular block of metal of height A, width B, and length C, as shown in
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Consider a rectangular block of metal of height A, width B, and length C, as shown in FIGURE 21-39. If a potential difference V is maintained between the two A × B faces of the block, a current IAB is observed to flow. Find the current that flows if the same potential difference V is applied between the two B × C faces of the block. Give your answer in terms of IAB.
Figure 21-39,
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