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- PHY102 Physics II © Dr.Cem Özdoğan
- (47) 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 ×10-6 m2 cross section. Nichrome has a resistivity of 5.00 × 10-7 Ωm.
- (a) If the element dissipates 5000W, what is its length?
- (b) If 100 V is used to obtain the same dissipation rate, what should the length be?