Four pieces of constantan wire, marked E, F, G, and H, each of length 1.0m, are at the temperature. Their respective diameters are 1 mm, 2 mm, 6 mm, and 10 mm. Which wire has the highest resistance?
Using the equation, R = \(\frac{\rho l}{A}\)
we conclude that the wire with the smallest diameter will have the highest resistance i.e. wire E
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