## Faraday’s Law of Induction 1a. Problem 28.9 b. Problem 28.39 2. Problem 28.43 3. Problem 28.71 Inductance 4a. Problem 28.56 b. Estimate the magnetic energy stored in the first kilometer of atmosphere above Milwaukee. Compare your answer to the energy stored in a 15-gallon gas tank. ugasoline=120 M J/gal 5. Problem 28.65 Feel free to sketch by hand, rather than using a “spreadsheet program.” 6a. Problem 29.83 (From the next chapter!) b. If the power delivered to the residents is 20kW, how much current flows on either side of the transformer? c. The 2000-volt distribution lines have a total resistance of 3Ω, how much power is lost as thermal dissipation? How much would be lost if those same lines operated at 240V? Hint: Use your answers from part b to calculate the powers in part c… EC1: Problem 28.53 EC2: Problem 28.80

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