2. A circular loop consisting of a single turn of wire and a diameter of 15 cm lays flat at the edge of a table, as shown. A uniform magnetic field of 0.50 T passes perpendicularly through the table and nowhere else. If the loop is pulled horizontally straight off the table at a speed of 15 m/s, what is the average emf induced in the loop. In what direction does the resulting induced current flow? If the loop has a resistance of 10 , how much current is induced in the loop? Hint: this is NOT a motional emf problem. [Answers: (a) E = 0.88 V, (b) ccw, (c) I = 0.088 A] O O O O O O OOO OO OO Poo 1> 00.00 0 0 OO

2. A circular loop consisting of a single turn of wire and a diameter of 15 cm lays flat at the edge of a table, as shown. A uniform magnetic field of 0.50 T passes perpendicularly through the table and nowhere else. If the loop is pulled horizontally straight off the table at a speed of 15 m/s, what is the average emf induced in the loop. In what direction does the resulting induced current flow? If the loop has a resistance of 10 , how much current is induced in the loop? Hint: this is NOT a motional emf problem. [Answers: (a) E = 0.88 V, (b) ccw, (c) I = 0.088 A] O O O O O O OOO OO OO Poo 1> 00.00 0 0 OO

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Q1.. Explain Faraday's law of induction and Lenz's Laws. The magnetic flux passes perpendicular to the plane of the circuit and is directed into the paper. If the magnetic flux varies with respect to time as per the following relation: B = (2t³ +3t2 + 8t +5) mWb, what is the magnitude of the induced emf in the loop when t= 3 s? Find out the direction of current through the circuit. X X XX www
50. A straight, stiff wire of length 1.00 m and T=0 T= 0 mass 25 g is sus- pended in a magnetic field B=0.75 T. The wire is connected to -1.00 m an emf. How much current must flow in the wire and in what direction so that the wire is sus- pended and the tension in the supporting wires is zero?
14. A wire is oriented into a loop that has a diameter of 1 cm. This loop is then pulled closed in 0.5 s. If there was a magnetic field directed through the loop of 0.25 T, what emf is induced?
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6. A loop of a wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.18 m. The normal to the plane of the loop is parallel to a constant magnetic field of magnitude 0.88 T. What is the magnitude of the change in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated through quarter of a revolution? Wb B (into paper) 190of19 oof19 oon9 oof 19.0of19 oof19 o 19 0of19 oof19 oo of19 oof oof19 19 0of19 0of19 oof19 oof19 o0
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