The wire in a heating element of an electric stove burner, Ask an Expert

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The wire in a heating element of an electric stove burner has a 0.75-m effective length and a 2.0*10^-6 m cross-section area. The wire is made of iron.

(a) What is its resistance when the stove is off (ie. 20 degree C)?

(b) When on, it operates at a 370 degree C temp. What is its operating resistance?

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