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# hw18 - Version 001 HW18 gavrin(25111 This print-out should...

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Version 001 – HW18 – gavrin – (25111) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. LongandSkinny 001(part1of2)10.0points Assume that the length of the solenoid is much larger than the solenoid’s radius and that the core of the solenoid is air. Calculate the inductance of a uniformly wound solenoid having 230 turns if the length of the solenoid is 37 cm and its cross-sectional area is 4 cm 2 . Correct answer: mH. 002(part2of2)10.0points Calculate the self-induced emf in the solenoid described in the first part if the current through it is decreasing at the rate of 49 A / s. Correct answer: mV. InductanceofaSolenoid 003(part1of2)10.0points A solenoid has 104 turns of wire uniformly wrapped around an air-filled core, which has a diameter of 11 mm and a length of 4 . 2 cm. The permeability of free space is 1 . 25664 × 10 - 6 N / A 2 . Calculate the self-inductance of the solenoid.

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