Chapter 19
... free to move vertically, is placed between two thin, vertical conductors, and a uniform magnetic field acts perpendicular to the page. When a 5.0-A current is directed as shown in the figure, the horizontal wire moves upward at constant velocity in the presence of gravity. (a) What forces act on the ...
... free to move vertically, is placed between two thin, vertical conductors, and a uniform magnetic field acts perpendicular to the page. When a 5.0-A current is directed as shown in the figure, the horizontal wire moves upward at constant velocity in the presence of gravity. (a) What forces act on the ...
Magnetic resonance measurements of hyperfine structure using optical pumping Contents
... between the electrons and electrodynamical moments of the nucleus. For electronic s-states and other states with J = 1/2, only the interaction with the nuclear magnetic dipole moment contributes. This interaction can be described by the Hamiltonian Hhfs = −µI · B J , where µI is the magnetic (dipole ...
... between the electrons and electrodynamical moments of the nucleus. For electronic s-states and other states with J = 1/2, only the interaction with the nuclear magnetic dipole moment contributes. This interaction can be described by the Hamiltonian Hhfs = −µI · B J , where µI is the magnetic (dipole ...
Force on a Current-Carrying Wire in a Magnetic Field F = ILB
... Inside the magnet, there are no isolated poles on which field lines can start or stop, so magnetic field lines always travel inside the magnet from the south pole to the north pole to form closed loops ...
... Inside the magnet, there are no isolated poles on which field lines can start or stop, so magnetic field lines always travel inside the magnet from the south pole to the north pole to form closed loops ...
Electrical Characterization of Gold-DNA
... (MDM) structure. Its electric behavior when subjected to a magnetic field was studied through its current-voltage (I-V) curve. Acquisition of the I-V curve demonstrated that DNA as a semiconductor exhibits diode behavior in the MDM structure. The current versus magnetic field strength followed a dec ...
... (MDM) structure. Its electric behavior when subjected to a magnetic field was studied through its current-voltage (I-V) curve. Acquisition of the I-V curve demonstrated that DNA as a semiconductor exhibits diode behavior in the MDM structure. The current versus magnetic field strength followed a dec ...
Name: Gravitational, Electric and Magnetic Fields
... a. All three follow the inverse square law, with electrostatic force and magnetic force needing two poles or charges. b. Magnetic force and gravitational force follow the inverse square law, with electrostatic force needing two opposite charges. c. All three require opposite poles or charges, but on ...
... a. All three follow the inverse square law, with electrostatic force and magnetic force needing two poles or charges. b. Magnetic force and gravitational force follow the inverse square law, with electrostatic force needing two opposite charges. c. All three require opposite poles or charges, but on ...
Chapter 20: Electromagnetic Induction
... Example: If the magnetic field in a region varies with time according to the graph shown below, find the magnitude of the induced EMF in a single loop of wire during the following time intervals: (a) 0-2.0 ms, (b) 2.0-4.0 ms, and (c) 4.0-8.0 ms. The loop has area 0.500 m2 and the plane of the loop ...
... Example: If the magnetic field in a region varies with time according to the graph shown below, find the magnitude of the induced EMF in a single loop of wire during the following time intervals: (a) 0-2.0 ms, (b) 2.0-4.0 ms, and (c) 4.0-8.0 ms. The loop has area 0.500 m2 and the plane of the loop ...
Electromagnets
... around a magnet and sending a current through the wire. You already knew that magnets attract (pull) or repel (push) other magnets and magnetic objects. But did you know that magnets con also exert their force on other materials in a way that makes these materials magnetic? When a current of electri ...
... around a magnet and sending a current through the wire. You already knew that magnets attract (pull) or repel (push) other magnets and magnetic objects. But did you know that magnets con also exert their force on other materials in a way that makes these materials magnetic? When a current of electri ...
Magnetic field
A magnetic field is the magnetic effect of electric currents and magnetic materials. The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is a vector field. The term is used for two distinct but closely related fields denoted by the symbols B and H, where H is measured in units of amperes per meter (symbol: A·m−1 or A/m) in the SI. B is measured in teslas (symbol:T) and newtons per meter per ampere (symbol: N·m−1·A−1 or N/(m·A)) in the SI. B is most commonly defined in terms of the Lorentz force it exerts on moving electric charges.Magnetic fields can be produced by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin. In special relativity, electric and magnetic fields are two interrelated aspects of a single object, called the electromagnetic tensor; the split of this tensor into electric and magnetic fields depends on the relative velocity of the observer and charge. In quantum physics, the electromagnetic field is quantized and electromagnetic interactions result from the exchange of photons.In everyday life, magnetic fields are most often encountered as a force created by permanent magnets, which pull on ferromagnetic materials such as iron, cobalt, or nickel, and attract or repel other magnets. Magnetic fields are widely used throughout modern technology, particularly in electrical engineering and electromechanics. The Earth produces its own magnetic field, which is important in navigation, and it shields the Earth's atmosphere from solar wind. Rotating magnetic fields are used in both electric motors and generators. Magnetic forces give information about the charge carriers in a material through the Hall effect. The interaction of magnetic fields in electric devices such as transformers is studied in the discipline of magnetic circuits.