College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 19.8, Problem 19.5QQ
Which of the following actions would double the magnitude of the magnetic force per unit length between two parallel current-carrying wires? Choose all correct answers. (a) Double one of the currents. (b) Double the distance between them. (c) Reduce the distance between them by half. (d) Double both currents.
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Chapter 19 Solutions
College Physics
Ch. 19.3 - A charged particle moves in a straight line...Ch. 19.3 - The north-pole end of a bar magnet is held near a...Ch. 19.5 - As a charged particle moves freely in a circular...Ch. 19.6 - A square and a circular loop with the same area...Ch. 19.8 - Which of the following actions would double the...Ch. 19.8 - Prob. 19.6QQCh. 19 - Prob. 1CQCh. 19 - Prob. 2CQCh. 19 - How can the motion of a charged particle be used...Ch. 19 - Prob. 4CQ
Ch. 19 - The following statements are related to the force...Ch. 19 - Will a nail be attracted to either pole of a...Ch. 19 - Figure CQ19.7 shows a coaxial cable carrying...Ch. 19 - A magnet attracts a piece of iron. The iron can...Ch. 19 - Figure CQ19.9 shows four positive charges, A, B,...Ch. 19 - Is the magnetic field created by a current loop...Ch. 19 - Suppose you move along a wire at the same speed as...Ch. 19 - Why do charged particles from outer space, called...Ch. 19 - A hanging Slinky toy is attached to a powerful...Ch. 19 - How can a current loop he used to determine the...Ch. 19 - Prob. 15CQCh. 19 - Figure CQ19.16 shows four permanent magnets, each...Ch. 19 - Two charged particles are projected in the same...Ch. 19 - Prob. 18CQCh. 19 - A magnetic field exerts a torque on each of the...Ch. 19 - Consider an electron near the Earths equator. In...Ch. 19 - (a) Find the direction of the force on a proton (a...Ch. 19 - Find the direction of the magnetic field acting on...Ch. 19 - Prob. 4PCh. 19 - A laboratory electromagnet produces a magnetic...Ch. 19 - Prob. 6PCh. 19 - Electrons and protons travel from the Sun to the...Ch. 19 - An oxygen ion (O+) moves in the xy-plane with a...Ch. 19 - A proton moving at 4.00 106 m/s through a...Ch. 19 - Sodium ions (Na+) move at 0.851 m/s through a...Ch. 19 - At the equator, near the surface of Earth, the...Ch. 19 - A proton travels with a speed of 5.02 106 m/s at...Ch. 19 - An electron moves in a circular path perpendicular...Ch. 19 - Figure P19.14a is a diagram of a device called a...Ch. 19 - Prob. 15PCh. 19 - A mass spectrometer is used to examine the...Ch. 19 - Jupiters magnetic field occupies a volume of space...Ch. 19 - Electrons in Earths upper atmosphere have typical...Ch. 19 - Prob. 19PCh. 19 - A proton (charge +e, mass mp), a deuteron (charge...Ch. 19 - A particle passes through a mass spectrometer as...Ch. 19 - In Figure P19.2, assume in each case the velocity...Ch. 19 - A current I = 15 A is directed along the positive...Ch. 19 - A straight wire carrying a 3.0-A current is placed...Ch. 19 - In Figure P19.3, assume in each case the velocity...Ch. 19 - A wire having a mass per unit length of 0.500 g/cm...Ch. 19 - A wire carries a current of 10.0 A in a direction...Ch. 19 - At a certain location, Earth has a magnetic field...Ch. 19 - A wire with a mass of 1.00 g/cm is placed on a...Ch. 19 - Mass m = 1.00 kg is suspended vertically at rest...Ch. 19 - Consider the system pictured in Figure P19.31. A...Ch. 19 - A metal rod of mass m carrying a current I glides...Ch. 19 - In Figure P19.33, the cube is 40.0 cm on each...Ch. 19 - A horizontal power line of length 58 m carries a...Ch. 19 - A wire is formed into a circle having a diameter...Ch. 19 - A current of 17.0 mA is maintained in a single...Ch. 19 - An eight-turn coil encloses an elliptical area...Ch. 19 - A current-carrying rectangular wire loop with...Ch. 19 - A 6.00-turn circular coil of wire is centered on...Ch. 19 - The orientation of small satellites is often...Ch. 19 - Along piece of wire with a mass of 0.100 kg and a...Ch. 19 - A rectangular loop has dimensions 0.500 m by 0.300...Ch. 19 - A lightning bolt may carry a current of 1.00 104...Ch. 19 - A long, straight wire going through the origin is...Ch. 19 - Neurons in our bodies carry weak currents that...Ch. 19 - In 1962 measurements of the magnetic field of a...Ch. 19 - A cardiac pacemaker can be affected by a static...Ch. 19 - The two wires shown in Figure P19.48 are separated...Ch. 19 - Prob. 49PCh. 19 - Two long, parallel wires carry currents of I1 =...Ch. 19 - Two long, parallel wires carry currents of I1 =...Ch. 19 - Prob. 52PCh. 19 - The magnetic field 40.0 cm away from a long,...Ch. 19 - Prob. 54PCh. 19 - Prob. 55PCh. 19 - Prob. 56PCh. 19 - A wire with a weight per unit length of 0.080 N/m...Ch. 19 - In Figure P19.58 the current in the long, straight...Ch. 19 - A long solenoid that has 1.00 103 turns uniformly...Ch. 19 - Prob. 60PCh. 19 - It is desired to construct a solenoid that will...Ch. 19 - Certain experiments must be performed in the...Ch. 19 - Ail electron is moving at a speed of 1.0 104 in/s...Ch. 19 - Figure P19.64 is a setup that can be used to...Ch. 19 - Two coplanar and concentric circular loops of wire...Ch. 19 - An electron moves in a circular path perpendicular...Ch. 19 - Prob. 67APCh. 19 - A 0.200-kg metal rod carrying a current of 10.0 A...Ch. 19 - Using an electromagnetic flowmeter (Fig. P19.69),...Ch. 19 - A uniform horizontal wire with a linear mass...Ch. 19 - Prob. 71APCh. 19 - Two long, parallel wires, each with a mass per...Ch. 19 - Protons having a kinetic energy of 5.00 MeV are...Ch. 19 - A straight wire of mass 10.0 g and length 5.0 cm...Ch. 19 - A 1.00-kg ball having net charge Q = 5.00 C is...Ch. 19 - Two long, parallel conductors separated by 10.0 cm...
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- What magnetic field is required in order to confine a proton moving with a speed of 4.0 × 106 m/s to a circular orbit of radius 10 cm?arrow_forwardIf a charged particle moves in a straight line, can you conclude that there is no magnetic field present?arrow_forwardConsidering the magnetic force law, are the velocity and magnetic field always perpendicular? Are the force and velocity always perpendicular? What about the force and magnetic field?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_forwardReview. A 30.0-g metal hall having net charge Q = 5.00 C is thrown out of a window horizontally north at a speed v = 20.0 m/s. The window is at a height h = 20.0 m above the ground. A uniform, horizontal magnetic field of magnitude B = 0.010 0 T is perpendicular to the plane of the balls trajectory and directed toward the west. (a) Assuming the ball follows the same trajectory as it would in the absence of the magnetic field, find the magnetic force acting on the ball just before it hits the ground. (b) Based on the result of part (a), is it justified for three-significant-digit precision to assume the trajectory is unaffected by the magnetic field? Explain.arrow_forwardAn electromagnet produces a magnetic field of magnitude 1.5 T throughout a cylindrical region of radius 6.0 cm. A straight wire carrying a current of 25 A passes through the field as shown in the accompanying figure. What is the magnetic force on the wire?arrow_forward
- A 1.00-kg ball having net charge Q = 5.00 C is thrown out of a window horizontally at a speed v = 20.0 m/s. The window is at a height h = 20.0 m above the ground. A uniform horizontal magnetic field of magnitude B = 0.010 0 T is perpendicular to the plane of the balls trajectory. Find the magnitude of the magnetic force acting on the ball just before it hits the ground. Hint: Ignore magnetic forces in finding the balls final velocity.arrow_forwardA charged particle is traveling through a uniform magnetic field. Which of the following statements are true of the magnetic field? There may be more than one correct statement. (a) It exerts a force on the particle parallel to the field. (b) It exerts a force on the particle along the direction of its motion. (c) It increases the kinetic energy of the particle. (d) It exerts a force that is perpendicular to the direction of motion. (e) It does not change the magnitude of the momentum of the particle.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_forward
- What is the direction of the magnetic force on a positive charge that moves as shown in each of the six cases?arrow_forwardHow would you orient two long, straight, current carrying wires so that there is no net magnetic force between them? (Hint: What orientation would lead to one wire not experiencing a magnetic field from the other?)arrow_forwardElectrons in Earths upper atmosphere have typical speeds near 6.00 105 m/s. (a) Calculate the magnitude of Earths magnetic field if an electrons velocity is perpendicular to the magnetic field and its circular path has a radius of 7.00 102 m. (b) Calculate the number of times per second that an electron circles around a magnetic field line.arrow_forward
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Magnets and Magnetic Fields; Author: Professor Dave explains;https://www.youtube.com/watch?v=IgtIdttfGVw;License: Standard YouTube License, CC-BY