College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Textbook Question
Chapter 20, Problem 55P
A circular metal loop is 22 cm in diameter, (a) How large a current must flow through this metal so that the magnetic field at its center is equal to the earth’s magnetic field of 0.50 × 10−4 T? (b) Show how the loop should be oriented so that it can cancel the earth’s magnetic field at its center.
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College Physics (10th Edition)
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Currents...Ch. 20 - A horizontal rod 0.200 m long carries a current...Ch. 20 - A straight 2.5 m wire carries a typical household...Ch. 20 - A magnetic field is used to suspend a wire of mass...Ch. 20 - A rectangular 10.0 cm by 20.0 cm circuit carrying...Ch. 20 - A long wire carrying a 6.00 A current reverses...Ch. 20 - As long wire carrying 4.50 A or current makes two...Ch. 20 - The 20.0 cm by 35.0 cm rectangular circuit shown...Ch. 20 - Prob. 34PCh. 20 - A circular coil of wire 8.6 cm in diameter has 15...Ch. 20 - A coil having 165 turns and a radius of 1.2 cm...Ch. 20 - A circular coil of 50 loops and diameter 20.0 cm...Ch. 20 - You want to produce a magnetic field of magnitude...Ch. 20 - Household magnetic fields. Home circuit breakers...Ch. 20 - (a) How large a current would a very long,...Ch. 20 - Currents in the heart. The body contains many...Ch. 20 - Magnetic sensitivity of electric fish. Electric...Ch. 20 - A jumper cable is used to start a car that has a...Ch. 20 - If the magnetic field due to a long, straight,...Ch. 20 - A long, straight wire carries a current l0 and...Ch. 20 - EMF. Currents in dc transmission lines can be 100...Ch. 20 - A long, straight telephone cable contains six...Ch. 20 - Two insulated wires perpendicular to each other in...Ch. 20 - Two long straight parallel wires are 10.0 cm apart...Ch. 20 - Set Up: B=0l2r The direction of BB is given by the...Ch. 20 - Two high-current transmission lines carry currents...Ch. 20 - Prob. 52PCh. 20 - Prob. 53PCh. 20 - An electric bus operates by drawing current from...Ch. 20 - A circular metal loop is 22 cm in diameter, (a)...Ch. 20 - A closely wound circular coil with a diameter of...Ch. 20 - A closely wound circular coil has a radius of 6.00...Ch. 20 - BIO Currents in the brain. 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