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A heating element is made by maintaining a potential difference of 71.0 V across the length of a Nichrome wire that has a 3.56 x 10-6 m² cross section. Nichrome has a resistivity of 5.00 x 10-70-m. (a) If the element dissipates 3610 W, what is its length? (b) If 107 Vis used to obtain the same dissipation rate, what should the length be? (a) Number i (b) Number Units Units
Transcribed Image Text:A heating element is made by maintaining a potential difference of 71.0 V across the length of a Nichrome wire that has a 3.56 x 10-6 m² cross section. Nichrome has a resistivity of 5.00 x 10-70-m. (a) If the element dissipates 3610 W, what is its length? (b) If 107 Vis used to obtain the same dissipation rate, what should the length be? (a) Number i (b) Number Units Units
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