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 67P
You have 25 m of wire, which you want to use to construct a 44-cm-diameter coil whose magnetic field at its center will exactly cancel the earth’s field of 0.55 gauss. What current will your coil require?
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College Physics (10th Edition)
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An electron at point A in Figure 20.59 has a...Ch. 20 - Prob. 19PCh. 20 - A 3.25 g bullet picks up an electric charge of...Ch. 20 - An electron travels into a 0.3 magnetic field...Ch. 20 - Prob. 22PCh. 20 - Singly ionized (one electron removed) atoms are...Ch. 20 - Ancient meat eating. The amount of meat in...Ch. 20 - A straight vertical wire carries a current of 1.20...Ch. 20 - Magnetic force on a lightning bolt. 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. The magnetic field...Ch. 20 - A closely wound, circular coil with radius 2.40 cm...Ch. 20 - Two circular concentric loops of wire lie on a...Ch. 20 - Calculate the magnitude and direction of the...Ch. 20 - A solenoid contains 750 coils of very thin wire...Ch. 20 - As a new electrical technician, you are designing...Ch. 20 - A solenoid is designed to produce a 0.0279 T...Ch. 20 - As shown in Figure 20.67, a single circular...Ch. 20 - A solenoid that is 35 cm long and contains 450...Ch. 20 - You have 25 m of wire, which you want to use to...Ch. 20 - A toroidal solenoid (see Figure 20.42) has inner...Ch. 20 - Three long, straight electrical cables, running...Ch. 20 - A long, straight, cylindrical wire of radius R...Ch. 20 - Platinum is a paramagnetic metal having a relative...Ch. 20 - When a certain paramagnetic material is placed in...Ch. 20 - A 150 g ball containing 4.00 108 excess electrons...Ch. 20 - Magnetic balance. The circuit shown in Figure...Ch. 20 - A thin 50.0-cm-long metal bar with mass 750 g...Ch. 20 - 76. A long, straight wire containing a...Ch. 20 - A singly charged an of Li (on isotope of lithium...Ch. 20 - An insulated circular ring of diameter 6.50 cm...Ch. 20 - The effect of transmission lines. Two hikers are...Ch. 20 - DATA A current-carrying wife of length 0.15 m is...Ch. 20 - Two very long, straight wires carry currents as...Ch. 20 - Prob. 82GPCh. 20 - Prob. 83GPCh. 20 - Prob. 84GPCh. 20 - A long wire carrying 6.50 A of current makes two...Ch. 20 - BIO Magnetic fields and MRI. Magnetic resonance...Ch. 20 - Prob. 87PPCh. 20 - The large magnetic fields used in MRI can produce...Ch. 20 - BIO Studying magnetic bacteria. Some types of...Ch. 20 - To use a larger sample of bacteria, the...Ch. 20 - BIO Studying magnetic bacteria. Some types of...
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