1 Introduction, Measurement, Estimating 2 Describing Motion: Kinematics In One Dimension 3 Kinematics In Two Or Three Dimensions; Vectors 4 Dynamics: Newton's Laws Of Motion 5 Using Newton's Laws: Friction, Circular Motion, Drag Forces 6 Gravitation And Newton's Synthesis 7 Work And Energy 8 Conservation Of Energy 9 Linear Momentum 10 Rotationalmotion 11 Angular Momentum; General Rotation 12 Static Equilibrium; Elasticity And Fracture 13 Fluids 14 Oscillations 15 Wave Motion 16 Sound 17 Temperature, Thermal Expansion And The Ideal Gas Law 18 Kinetic Theory Of Gases 19 Heat And The First Law Of Thermodynamics 20 Second Law Of Thermodynamics 21 Electric Charge And Electric Field 22 Gauss's Law 23 Electric Potential 24 Capacitance, Dielectrics, Electric Energy Storage 25 Electric Currents And Resistance 26 Dc Circuits 27 Magnetism 28 Sources Of Magnetic Field 29 Electromagnetic Induction And Faraday's Law 30 Inductance, Electromagnetic Oscillations, And Ac Circuits 31 Maxwell's Equation And Electromagnetic Waves 32 Light: Reflection And Refraction 33 Lenses And Optical Instruments 34 The Wave Nature Of Light: Interference 35 Diffraction And Polarization 36 Special Theory Of Relativity 37 Early Quantum Theory And Models Of The Atom 38 Quantum Mechanics 39 Quantum Mechanics Of Atoms 40 Molecules And Solids 41 Nuclear Physics And Radioactivity 42 Nuclear Energy; Effects And Uses Of Radiation 43 Elementary Particles 44 Astrophysics And Cosmology expand_more
27.1 Magnets And Magnetic Fields 27.2 Electric Currents Produce Magnetic Fields 27.3 Force On An Electric Current In A Magnetic Field; Definition Of B 27.4 Force On An Electric Charge Moving In A Magnetic Field 27.5 Torque On A Current Loop; Magnetic Dipole Moment 27.6 Applications: Motors, Loudspeakers, Galvanometers 27.7 Discovery And Properties Of The Electron 27.8 The Hall Effect 27.9 Mass Spectrometer Chapter Questions expand_more
Problem 1Q: A compass needle is not always balanced parallel to the Earths surface, but one end may dip... Problem 2Q Problem 3Q: A horseshoe magnet is held vertically with the north pole on the left and south pole on the right. A... Problem 4Q: In the relation F=IlB, which pairs of the vectors (F,l,B) are always at 90? Which can be at other... Problem 5Q: The magnetic field due to current in wires in your home can affect a compass. Discuss the effect in... Problem 6Q: If a negatively charged particle enters a region of uniform magnetic field which is perpendicular to... Problem 7Q: In Fig. 2734, charged particles move in the vicinity of a current-carrying wire. For each charged... Problem 8Q: A positively charged particle in a nonuniform magnetic field follows the trajectory shown in Fig.... Problem 9Q: Note that the pattern of magnetic field lines surrounding a bar magnet is similar to that of the... Problem 10Q: Explain why a strong magnet held near a CRT television screen causes the picture to become... Problem 11Q: Describe the trajectory of a negatively charged particle in the velocity selector of Fig. 2721 if... Problem 12Q: Can you set a resting electron into motion with a steady magnetic field? With an electric field?... Problem 13Q: A charged particle is moving in a circle under the influence of a uniform magnetic field. If an... Problem 14Q: The force on a particle in a magnetic field is the idea behind electromagnetic pumping. It is used... Problem 15Q: A beam of electrons is directed toward a horizontal wire carrying a current from left to right (Fig.... Problem 16Q: A charged particle moves in a straight line through a particular region of space. Could there be a... Problem 17Q: If a moving charged particle is deflected sideways in some region of space, can we conclude, for... Problem 18Q: How could you tell whether moving electrons in a certain region of space are being deflected by an... Problem 19Q: How can you make a compass without using iron or other ferromagnetic material? Problem 20Q Problem 21Q: In what positions (if any) will a current loop placed in a uniform magnetic field he in (a) stable... Problem 22Q: A rectangular piece of semiconductor is inserted in a magnetic field and a battery is connected to... Problem 23Q: Two ions have the same mass, but one is singly ionized and the other is doubly ionized. How will... Problem 1P: (I) (a) What is the force per meter of length on a straight wire carrying a 9.40-A current when... Problem 2P: (I) Calculate the magnitude of the magnetic force on a 240-m length of wire stretched between two... Problem 3P: (I) A 1.6-m length of wire carrying 4.5 A of current toward the south is oriented horizontally. At... Problem 4P: (II) The magnetic force per meter on a wire is measured to be only 25 percent of its maximum... Problem 5P: (II) The force on a wire is a maximum of 7.50 102 N when placed between the pole faces of a magnet.... Problem 6P: (II) Suppose a straight 1.00-mm-diameter copper wire could just float horizontally in air because of... Problem 7P Problem 8P: (II) A long wire stretches along the x axis and carries a 3.0-A current to the right (+x). The wire... Problem 9P: (II) A current-carrying circular loop of wire (radius r, current I) is partially immersed in a... Problem 10P: (II) A 2.0-m-long wire carries a current of 8.2 A and is immersed within a uniform magnetic field B.... Problem 11P Problem 12P: (III) A circular loop of wire, of radius r, carries current I. It is placed in a magnetic field... Problem 13P: (I) Determine the magnitude and direction of the force on an electron traveling 8.75 105 m/s... Problem 14P: (I) An electron is projected vertically upward with a speed of 1.70 106 m/s into a uniform magnetic... Problem 15P: (I) Alpha particles of charge q = +2e and mass m = 6.6 1027 kg are emitted from a radioactive... Problem 16P: (I) Kind the direction of the force on a negative charge for each diagram shown in Fig. 2742, where... Problem 17P: (I) Determine the direction of B for each ease in Fig. 2743, where F represents the maximum magnetic... Problem 18P Problem 19P: (II) A doubly charged helium atom whose mass is 6.6 1027 kg is accelerated by a voltage of 2700 V.... Problem 20P: (II) A proton (mass mp), a deuteron (m = 2mp, Q = e), and an alpha particle (m = 4mp, Q = 2e) are... Problem 21P: (II) For a particle of mass m and charge q moving in a circular path in a magnetic field B, (a) show... Problem 22P: (II) An electron moves with velocity v=(7.0i6.0j)104m/s in a magnetic field B=(0.80i+0.60j)T.... Problem 23P: (II) A 6.0-MeV (kinetic energy) proton enters a 0.20-T field, in a plane perpendicular to the field.... Problem 24P: (II) An electron experiences the greatest force as it travels 2.8 106 m/s in a magnetic field when... Problem 25P: (II) A proton moves through a region of space where there is a magnetic field B=(0.45i+0.38j)T and... Problem 26P: (II) An electron experiences a force F=(3.8i2.7j)1013N when passing through a magnetic field... Problem 27P: (II) A particle of charge q moves in a circular path of radius r in a uniform magnetic field B. If... Problem 28P: (II) An electron enters a uniform magnetic field B = 0.28 T at a 45 angle to B. Determine the radius... Problem 29P Problem 30P: (II) The path of protons emerging from an accelerator must be bent by 90 by a bending magnet so as... Problem 31P: (III) Suppose the Earths magnetic field at the equator has magnitude 0.50 104 T and a northerly... Problem 32P Problem 33P: (III) A proton moving with speed = 1.3 105 m/s in a field-free region abruptly enters an... Problem 34P: (III) A particle with charge +q and mass m travels in a uniform magnetic field B=B0k. At time t = 0,... Problem 35P: (I) How much work is required to rotate the current loop (Fig. 2722) in a uniform magnetic field B... Problem 36P: (I) A 13.0-cm-diameter circular loop of wire is placed with the plane of the loop parallel to the... Problem 37P: (II) A circular coil 18.0 cm in diameter and containing twelve loops lies flat on the ground. The... Problem 38P: (II) Show that the magnetic dipole moment of an electron orbiting the proton nucleus of a hydrogen... Problem 39P: (II) A 15-loop circular coil 22 cm in diameter lies in the xy plane. The current in each loop of the... Problem 40P: (III) Suppose a nonconducting rod of length d carries a uniformly distributed charge Q. It is... Problem 41P: (I) If the current to a motor drops by 12%, by what factor does the output torque change? Problem 42P: (I) A galvanometer needle deflects full scale for a 63.0-A current. What current will give... Problem 43P: (I) If the restoring spring of a galvanometer weakens by 15% over the years, what current will give... Problem 44P Problem 45P: (II) An oil drop whose mass is determined to be 3.3 1015 kg is held at rest between two large... Problem 46P: (II) A Hall probe, consisting of a rectangular slab of current-carrying material, is calibrated by... Problem 47P: (II) A Hall probe used to measure magnetic field strengths consists of a rectangular slab of... Problem 48P: (II) A rectangular sample of a metal is 3.0 cm wide and 680 m thick. When it carries a 42-A current... Problem 49P: (II) In a probe that uses the Hall effect to measure magnetic fields, a 12.0-A current passes... Problem 50P Problem 51P Problem 52P: (II) One form of mass spectrometer accelerates ions by a voltage V before they enter a magnetic... Problem 53P: (II) Suppose the electric field between the electric plates in the mass spectrometer of Fig. 2733 is... Problem 54P: (II) A mass spectrometer is being used to monitor air pollutants. It is difficult, however, to... Problem 55P: (II) An unknown particle moves in a straight line through crossed electric and magnetic fields with... Problem 56GP: Protons move in a circle of radius 5.10 cm in a 0.625-T magnetic field. What value of electric field... Problem 57GP: Protons with momentum 3.8 1016 kg m/s are magnetically steered clockwise in a circular path 2.0 km... Problem 58GP: A proton and an electron have the same kinetic energy upon entering a region of constant magnetic... Problem 59GP Problem 60GP Problem 61GP: Near the equator, the Earths magnetic field points almost horizontally to the north and has... Problem 62GP: Calculate the magnetic force on an airplane which has acquired a net charge of 1850 C and moves with... Problem 63GP: A motor run by a 9.0-V battery has a 20 turn square coil with sides of length 5.0 cm and total... Problem 64GP: Estimate the approximate maximum deflection of the electron beam near the center of a CRT television... Problem 65GP Problem 66GP: The cyclotron (Fig. 2750) is a device used to accelerate elementary particles such as protons to... Problem 67GP: Magnetic fields are very useful in particle accelerators for beam steering; that is, magnetic fields... Problem 68GP: A square loop of aluminum wire is 20.0 cm on a side. It is to carry 15.0 A and rotate in a uniform... Problem 69GP: A sort of projectile launcher is shown in Fig. 2753. A large current moves in a closed loop composed... Problem 70GP Problem 71GP: In a certain cathode ray tube, electrons are accelerated horizontally by 25 kV. They then pass... Problem 72GP Problem 73GP: A proton follows a spiral path through a gas in a magnetic field of 0.018 T, perpendicular to the... Problem 74GP Problem 75GP: The power cable for an electric trolley (Fig. 2756) carries a horizontal current of 330 A toward the... Problem 76GP: A uniform conducting rod of length d and mass m sits atop a fulcrum, which is placed a distance d/4... Problem 77GP: In a simple device for measuring the magnitude B of a magnetic field, a conducting rod (length d =... format_list_bulleted