Question

See picture below

Inner radius 1 cm

outer radius 1.2 cm

R= row (1/A)

Row=resistivity= 10^-8 m

alpha=temperature coefficients = 10^-3 C deg -1


A. Calculate R at 20 C

B. Calculate R at 50 C


Pretty sure A is just plug into formula. For B, we have to take into account the teperature change and use alpha.


Calculate R @ 20 degree C b Calculate Rat 50 degre


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