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# HW22 - Platt David Homework 22 Due 4:00 am Inst Ken Shih...

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Platt, David – Homework 22 – Due: Oct 31 2005, 4:00 am – Inst: Ken Shih 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points A(n) 0 . 58 m length of wire moves across a 2 . 14 T magnetic field. At what speed would it have to move to induce an EMF of 13 . 1 V? Answer in units of m / s. 002 (part 1 of 1) 10 points A 135-turn 5 cm square wire coil rotates about a vertical axis at 1210 rev / min. The horizon- tal component of the Earth’s magnetic field at the location of the loop is 2 . 8 × 10 - 5 T. B x = 2 . 8 × 10 - 5 T B x = 2 . 8 × 10 - 5 T 5 cm 5 cm 1210 rev / min Calculate the maximum emf induced in the coil by Earth’s field. Answer in units of mV. 003 (part 1 of 2) 10 points The resistance of the rectangular current loop is R , and the metal rod is sliding to the left. The length of the rod is d , while the width of the rails is .

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HW22 - Platt David Homework 22 Due 4:00 am Inst Ken Shih...

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