College Physics

Figure 22.9Instrument for magnetic resonance imaging (MRI). The device uses a superconducting cylindrical coil for the main magn ...

Figure 22.12An electromagnet induces regions of permanent magnetism on a floppy disk coated with a ferromagnetic material. The i ...

PhET Explorations: Magnets and Electromagnets Explore the interactions between a compass and bar magnet. Discover how you can us ...

The strength of the field is proportional to the closeness of the lines. It is exactly proportional to the number of lines per ...

Making Connections: Charges and Magnets There is no magnetic force on static charges. However, there is a magnetic force on movi ...

Figure 22.19Trails of bubbles are produced by high-energy charged particles moving through the superheated liquid hydrogen in th ...

Example 22.2 Calculating the Curvature of the Path of an Electron Moving in a Magnetic Field: A Magnet on a TV Screen A magnet b ...

The properties of charged particles in magnetic fields are related to such different things as the Aurora Australis or Aurora Bo ...

Figure 22.25The Fermilab facility in Illinois has a large particle accelerator (the most powerful in the world until 2008) that ...

Figure 22.27The Hall effect. (a) Electrons move to the left in this flat conductor (conventional current to the right). The magn ...

Figure 22.28The Hall emfεproduces an electric force that balances the magnetic force on the moving charges. The magnetic force p ...

practice, this difficulty is overcome by applying an AC magnetic field, so that the Hall emf is AC with the same frequency. An a ...

Example 22.4 Calculating Magnetic Force on a Current-Carrying Wire: A Strong Magnetic Field Calculate the force on the wire show ...

22.8 Torque on a Current Loop: Motors and Meters Motorsare the most common application of magnetic force on current-carrying wir ...

Figure 22.35Top views of a current-carrying loop in a magnetic field. (a) The equation for torque is derived using this view. No ...

Discussion This torque is large enough to be useful in a motor. The torque found in the preceding example is the maximum. As the ...

Magnetic Field Created by a Long Straight Current-Carrying Wire: Right Hand Rule 2 Magnetic fields have both direction and magni ...

Ampere’s Law and Others The magnetic field of a long straight wire has more implications than you might at first suspect.Each se ...

Figure 22.40(a) Because of its shape, the field inside a solenoid of lengthlis remarkably uniform in magnitude and direction, as ...

Figure 22.41 Generator (http://cnx.org/content/m42382/1.2/generator_en.jar) 22.10 Magnetic Force between Two Parallel Conductors ...