19.1 Magnets, Magnetic Poles, and Magnetic Field Direction
... – A) Is the magnetic force between these wires attractive or repulsive? – B) Wire 1 carries a current of 5.0 A and the current in wire 2 is 10 A. Both have a length of 50 cm, and they are separated by 3.0 mm. Determine the magnitude of the magnetic field created by each wire. – C) Determine the magn ...
... – A) Is the magnetic force between these wires attractive or repulsive? – B) Wire 1 carries a current of 5.0 A and the current in wire 2 is 10 A. Both have a length of 50 cm, and they are separated by 3.0 mm. Determine the magnitude of the magnetic field created by each wire. – C) Determine the magn ...
EDI Exam III problems
... Determine all nine elements of the Maxwell stress tensor, in the region between the plates. Display your answer as a 3 x 3 matrix. Determine the force per unit area on the top plate. What is the momentum per unit area, per unit time, crossing the xy plane? At the plates this momentum is absorbed, an ...
... Determine all nine elements of the Maxwell stress tensor, in the region between the plates. Display your answer as a 3 x 3 matrix. Determine the force per unit area on the top plate. What is the momentum per unit area, per unit time, crossing the xy plane? At the plates this momentum is absorbed, an ...
Electromagnetic cannon
... Experimental Procedure Charge the capacitor five times longer than its time constant. Connect the capacitor to the solenoid. Measure the distance the bar flies to estimate the initial speed. Repeat the procedure above. ...
... Experimental Procedure Charge the capacitor five times longer than its time constant. Connect the capacitor to the solenoid. Measure the distance the bar flies to estimate the initial speed. Repeat the procedure above. ...
Monday, Apr. 10, 2006
... Pulling a coil from a magnetic field. A square coil of wire with side 5.00cm contains 100 loops and is positioned perpendicular to a uniform 0.600-T magnetic field. It is quickly and uniformly pulled from the field (moving perpendicular to B) to a region where B drops abruptly to zero. At t=0, the r ...
... Pulling a coil from a magnetic field. A square coil of wire with side 5.00cm contains 100 loops and is positioned perpendicular to a uniform 0.600-T magnetic field. It is quickly and uniformly pulled from the field (moving perpendicular to B) to a region where B drops abruptly to zero. At t=0, the r ...
PPT
... How much the theoretical 2-D reconnection picture is valid in actual experiments, How does guide field affect reconnection rate What kinds of non-MHD effects would dominate in the reconnection layer, How the magnetic energy is converted to plasma flows and thermal energy, What is a guiding principle ...
... How much the theoretical 2-D reconnection picture is valid in actual experiments, How does guide field affect reconnection rate What kinds of non-MHD effects would dominate in the reconnection layer, How the magnetic energy is converted to plasma flows and thermal energy, What is a guiding principle ...
Plasma Lens with a Current Density Depended on External
... it follows: at z=0, a(0) = b, where b is the radius of an electrode that supply the current in the plasma (e.g., it is the inner electrode of the plasma gun). From Eq.(1) it is follows: if the equidistance of the magnetic surfaces is set in some cross-section, so it conserves in any other one. As a ...
... it follows: at z=0, a(0) = b, where b is the radius of an electrode that supply the current in the plasma (e.g., it is the inner electrode of the plasma gun). From Eq.(1) it is follows: if the equidistance of the magnetic surfaces is set in some cross-section, so it conserves in any other one. As a ...
MasteringPhysics
... A Rail Gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass and electrical resistance rests on parallel horizontal rails (that have negligible ...
... A Rail Gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass and electrical resistance rests on parallel horizontal rails (that have negligible ...
The net magnetic field
... exerted on a current loop by a magnetic field. The motor converts electrical energy into mechanical energy. If the current always went the same way around the loop, the torque would be clockwise for half a revolution and counterclockwise during the other half. To keep the torque (and the rotation) g ...
... exerted on a current loop by a magnetic field. The motor converts electrical energy into mechanical energy. If the current always went the same way around the loop, the torque would be clockwise for half a revolution and counterclockwise during the other half. To keep the torque (and the rotation) g ...
Chapter14
... dipoles lag the magnetizing force. For steel and other hard magnetic materials, hysteresis losses are much higher than in soft magnetic materials ...
... dipoles lag the magnetizing force. For steel and other hard magnetic materials, hysteresis losses are much higher than in soft magnetic materials ...
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.The electrical resistivity of a metallic conductor decreases gradually as temperature is lowered. In ordinary conductors, such as copper or silver, this decrease is limited by impurities and other defects. Even near absolute zero, a real sample of a normal conductor shows some resistance. In a superconductor, the resistance drops abruptly to zero when the material is cooled below its critical temperature. An electric current flowing through a loop of superconducting wire can persist indefinitely with no power source.In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K (−183 °C). Such a high transition temperature is theoretically impossible for a conventional superconductor, leading the materials to be termed high-temperature superconductors. Liquid nitrogen boils at 77 K, and superconduction at higher temperatures than this facilitates many experiments and applications that are less practical at lower temperatures.