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V02

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 10-72-m. (a) If the element dissipates 3610 W, what is its length? (b) If 107 V is
used to obtain the same dissipation rate, what should the length be?
(a) Number
(b) Number
Units
Units

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