File
... Ella does not have a 450 Ω resistor, but she does have three 300 Ω resistors. In the box below, draw a diagram to show how she could connect the three 300 Ω resistors to give a total of 450 Ω. ...
... Ella does not have a 450 Ω resistor, but she does have three 300 Ω resistors. In the box below, draw a diagram to show how she could connect the three 300 Ω resistors to give a total of 450 Ω. ...
Electricity and Magnetism
... inclination to do this) The machine applies a radio frequency pulse specific to hydrogen to the part of the body of interest This causes those hydrogen atoms to move in the opposite direction; this is the ‘resonance’ part of the ...
... inclination to do this) The machine applies a radio frequency pulse specific to hydrogen to the part of the body of interest This causes those hydrogen atoms to move in the opposite direction; this is the ‘resonance’ part of the ...
Reference Frames and Relative Motion Uniform Circular Motion
... 1) Put your thumb in the direction of the F (right) and your fingers in the direction of v (up) The way that your fingers curl is the direction of B. 2) Put your palm in the direction of F (right), and your thumb in the direction of v (up), your fingers (keep them straight) point in the direction of ...
... 1) Put your thumb in the direction of the F (right) and your fingers in the direction of v (up) The way that your fingers curl is the direction of B. 2) Put your palm in the direction of F (right), and your thumb in the direction of v (up), your fingers (keep them straight) point in the direction of ...
Homework Wednesday 4-25-2012 A resistor is made in the form of a
... made of material whose resistivity is ρ, the other of length l 2 is made of material whose resistivity is 3ρ. There is a current I uniformly distributed over the area A. Express all answers in terms of fundamental constants and the symbols shown in the diagram above. a. Determine expressions for the ...
... made of material whose resistivity is ρ, the other of length l 2 is made of material whose resistivity is 3ρ. There is a current I uniformly distributed over the area A. Express all answers in terms of fundamental constants and the symbols shown in the diagram above. a. Determine expressions for the ...
Concept Questions
... d) An electron moving perpendicular to a constant electric field. e) An electron moving perpendicular to a constant magnetic field. 27) Draw force diagrams and fields for a) A hydrogen ion in the TRIUMF cyclotron when between the dees. b) An ion passing through a mass spectrometer c) An electron and ...
... d) An electron moving perpendicular to a constant electric field. e) An electron moving perpendicular to a constant magnetic field. 27) Draw force diagrams and fields for a) A hydrogen ion in the TRIUMF cyclotron when between the dees. b) An ion passing through a mass spectrometer c) An electron and ...
Link to PPT from day 2
... change mechanical energy into electrical energy. • A pickup consists of a permanent magnet wrapped in a copper wire. The number of wrappings determine the current that the pickup produces. • Guitar strings are slightly magnetic. When one is plucked it changes the magnetic field above the pickup, res ...
... change mechanical energy into electrical energy. • A pickup consists of a permanent magnet wrapped in a copper wire. The number of wrappings determine the current that the pickup produces. • Guitar strings are slightly magnetic. When one is plucked it changes the magnetic field above the pickup, res ...
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.