Applied Physics (11th Edition)
11th Edition
ISBN: 9780134159386
Author: Dale Ewen, Neill Schurter, Erik Gundersen
Publisher: PEARSON
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Chapter 18, Problem 16RQ
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Explain the changes made in the magnetic field of the solenoid if the radius decreases by the factor of 2.
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Applied Physics (11th Edition)
Ch. 18.2 - Find the magnetic field at 0.250 m from a long...Ch. 18.2 - Prob. 2PCh. 18.2 - What is the current in a wire if the magnetic...Ch. 18.2 - A power line runs northsouth carrying 675 A and is...Ch. 18.2 - Prob. 5PCh. 18.2 - Find the current in a wire if the magnetic field...Ch. 18.2 - A solenoid has 1000 turns of wire, is 0.320 m...Ch. 18.2 - A solenoid has 3000 turns of wire and is 0.350 m...Ch. 18.2 - A small solenoid is 0.150 m in length and 0.0150 m...Ch. 18.2 - A solenoid has 2500 turns of wire and is 0.200 m...
Ch. 18.2 - A long solenoid has 1000 turns and is 0.250 m...Ch. 18.2 - A small solenoid 0.100 m in length has 1000 turns...Ch. 18.2 - An auto mechanic wants to use a solenoid she found...Ch. 18.2 - An earthmover requires a solenoid with 2500 turns...Ch. 18 - The presence of a magnetic force field may be...Ch. 18 - The deflection of a compass needle placed near a...Ch. 18 - Ampres rule relates a. the strength of a magnetic...Ch. 18 - The unit used to express the strength of a...Ch. 18 - Describe how a strong magnetic field can be...Ch. 18 - Describe how to determine the direction of a...Ch. 18 - Describe how a magnetic field is induced by a...Ch. 18 - Describe how a generator produces current.Ch. 18 - Prob. 9RQCh. 18 - Describe how a motor works.Ch. 18 - What is a synchronous motor, and how does it work?Ch. 18 - Distinguish between a universal motor and an...Ch. 18 - Distinguish between an armature and a stator.Ch. 18 - Prob. 14RQCh. 18 - Prob. 15RQCh. 18 - Prob. 16RQCh. 18 - If the number of turns per inch in a solenoid were...Ch. 18 - Describe how to find the flux lines near a bar...Ch. 18 - How is alternating current produced by a...Ch. 18 - Find the magnetic field at 0.255 m from a long...Ch. 18 - Prob. 2RPCh. 18 - What is the current in a wire if the magnetic...Ch. 18 - A solenoid has 2000 turns of wire, is 0.452 m...Ch. 18 - A solenoid has 2750 turns of wire and is 0.182 m...Ch. 18 - A power line running northsouth carrying 500 A is...Ch. 18 - A ships compass is mistakenly placed 8.35 cm away...Ch. 18 - Figure 18.10 shows a compass near a...Ch. 18 - A coaxial cable consists of an inner conducting...Ch. 18 - Prob. 4ACCh. 18 - Prob. 5AC
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- Solenoid A has length L and N turns, solenoid B has length 2L and N turns, and solenoid C has length L/2 and 2N turns. If each solenoid carries the same current, rank the magnitudes of the magnetic fields in the centers of the solenoids from largest to smallest.arrow_forwardCalculate the magnitude of the magnetic field at a point 25.0 cm from a long, thin conductor carrying a current of 2.00 A.arrow_forwardA toroid with a square cross section 3.0cm3.0cm has an inner radius of 25.0 cm. It is wound with 500 turns of wire, and it carries a current of 2.0 A. What is the strength of the magnetic field at the center of the square cross section?arrow_forward
- A solenoid with an iron core is 25 cm long and is wrapped with 100 turns of wire. When the current through the solenoid is 10 A, the magnetic field inside it is 2.0 T. For this current, what is the permeability of the iron? If the current is turned off and then restored to 10 A, will the magnetic field necessarily return to 2.0 T?arrow_forwardA cosmic-ray electron moves at 7.5 × 106 m/sinches perpendicular to Earth’s magnetic field at an altitude queer the field strength is 1.0 × 105T. What is the radius of the circular path the electron follows?arrow_forwardIs the magnetic field inside a toroid completely uniform? Almost uniform?arrow_forward
- The accompanying figure shows a cross-section of a long, hollow, cylindrical conductor of inner radius r1= 3.0 cm and outer radius r2= 5.0 cm. A 50-A current distributed uniformly over the cross-section flows into the page. Calculate the magnetic field at r = 2.0 cm. r = 4.0 cm. and r = 6.0 cm.arrow_forwardSketch a plot of the magnitude of the magnetic field as a function of position r for a coax (Fig. P31.27).arrow_forwardA square loop whose sides are 6.0-cm long is made with copper wire of radius 1.0 mm. If a magnetic field perpendicular to the loop is changing at a rate of 5.0 mT/s, what is the current in the loop?arrow_forward
- Does increasing the magnitude of a uniform magnetic field through which a charge is traveling necessarily mean increasing the magnetic force on the charge? Does changing the direction of the field necessarily mean a change in the force on the charge?arrow_forwardHow is the percentage change in the strength of the magnetic field across the face of the toroid related to the percentage change in the radial distance from the axis of the toroid?arrow_forwardSodium ions (Na+) move at 0.851 m/s through a blood-stream in the arm of a person standing near a large magnet. The magnetic field has a strength of 0.254 T and makes an angle of 51.0 with the motion of the sodium ions. The arm contains 100 cm3 of blood with a concentration of 3.00 1020 Na+ ions per cubic centimeter. If no other ions were present in the arm, what would be the magnetic force on the arm?arrow_forward
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