Answer: A heating element is made by maintaining a
Chapter , Problem 47(choose chapter or problem)
A heating element is made by maintaining a potential difference of 75.0 V across the length of a Nichrome wire that has a 2.60 X 10-6 m2 cross section. Nichrome has a resistivity of 5.00 X 10-7 D m. (a) If the element dissipates 5000 W, what is its length? (b) If 100 V is used to obtain the same dissipation rate, what should the length be?
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