Physics, 20.03.2020 11:24 rhiannonwheatcr4468
A 1.30 m cylindrical rod of diameter 0.550 cm is connected to a power supply that maintains a constant potential difference of 14.0 V across its ends, while an ammeter measures the current through it. You observe that at room temperature (20.0 ∘C) the ammeter reads 18.2 A , while at 92.0 ∘C it reads 17.0 A . You can ignore any thermal expansion of the rod. Part A Find the resistivity and for the material of the rod at 20 ∘C.
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A 1.30 m cylindrical rod of diameter 0.550 cm is connected to a power supply that maintains a consta...
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