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The two segments of the wire in Figure P22.59 have equal diameters and equal lengths but different resistivities ρ1 and ρ2. Current I passes through this wire. If the resistivities have the ratio ρ2/ρ1 = 2, what is the ratio ∆V1/∆V2 of the potential differences across the two segments of the wire?
Figure P22.59
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