Chapter 5 - Fayetteville State University
... conductor. It is also called voltage (V) 1 volt = joule/coulomb = J/C 5) Ohm’s Law: I = V/R I: electric current amperes V: potential difference or voltage volts R the conductor resistance ohms Resistance (R) in a conductor depends inversely on the conductor length, directly in the conductor cross-se ...
... conductor. It is also called voltage (V) 1 volt = joule/coulomb = J/C 5) Ohm’s Law: I = V/R I: electric current amperes V: potential difference or voltage volts R the conductor resistance ohms Resistance (R) in a conductor depends inversely on the conductor length, directly in the conductor cross-se ...
Magnets
... A Magnet is a special metal that can attract other magnetic metals – they are iron, nickel, cobalt and steel. Most other metals, like aluminium, copper or gold, are not magnetic. Magnet can be made as permanent magnets or temporary magnets. Magnets come with different shapes. Q1. Which are the 3 mag ...
... A Magnet is a special metal that can attract other magnetic metals – they are iron, nickel, cobalt and steel. Most other metals, like aluminium, copper or gold, are not magnetic. Magnet can be made as permanent magnets or temporary magnets. Magnets come with different shapes. Q1. Which are the 3 mag ...
Junior Honours Thermodynamics Assessed Problem 3: Magnetic
... domestic refrigerator than those based on gas-compression/expansion. It extends the simplified treatment given in the lectures. Magnetic refrigerators are commercially available for very low temperature applications below 1 K, but they are not used used at room temperature. Prototypes using Gadolini ...
... domestic refrigerator than those based on gas-compression/expansion. It extends the simplified treatment given in the lectures. Magnetic refrigerators are commercially available for very low temperature applications below 1 K, but they are not used used at room temperature. Prototypes using Gadolini ...
PHYS_3342_111511
... produces uniform longitudinal field in the interior and almost no field outside For the path in an ideal solenoid: BL 0nIL B 0nI (n turns of the coil per unit length) ...
... produces uniform longitudinal field in the interior and almost no field outside For the path in an ideal solenoid: BL 0nIL B 0nI (n turns of the coil per unit length) ...
ch29
... Fig. 29-4 A right-hand rule gives the direction of the magnetic field due to a current in a wire. (a) The magnetic field B at any point to the left of the wire is perpendicular to the dashed radial line and directed into the page, in the direction of the fingertips, as indicated by the x. (b) If the ...
... Fig. 29-4 A right-hand rule gives the direction of the magnetic field due to a current in a wire. (a) The magnetic field B at any point to the left of the wire is perpendicular to the dashed radial line and directed into the page, in the direction of the fingertips, as indicated by the x. (b) If the ...
Magnetic Flux
... 2. A circular coil has 10 turns and diameter 2.0 cm. It is placed in a uniform magnetic field of strength 300 mT. The plane of the coil and the direction of the field make an angle of 30 0. Determine the magnetic flux linkage through the coil. Ans : 4.17 X 10-4 Wb 3. A circular coil is placed in a u ...
... 2. A circular coil has 10 turns and diameter 2.0 cm. It is placed in a uniform magnetic field of strength 300 mT. The plane of the coil and the direction of the field make an angle of 30 0. Determine the magnetic flux linkage through the coil. Ans : 4.17 X 10-4 Wb 3. A circular coil is placed in a u ...
physics – magnetism - Strive for Excellence Tutoring
... The left hand rule is used to determine the direction of the magnetic force from a magnetic field on a current. To use the left hand rule, we need to follow the steps below: 1. The index finger represents the magnetic field (B) and points straight ahead 2. The middle finger represents the current (I ...
... The left hand rule is used to determine the direction of the magnetic force from a magnetic field on a current. To use the left hand rule, we need to follow the steps below: 1. The index finger represents the magnetic field (B) and points straight ahead 2. The middle finger represents the current (I ...
(111) direction : molecular field parameters
... Tb+3 and Ho+3, the results are very similar in both the Al and Ga compounds in contrast to the observed results for Dy+3 and Er+3; this gives some support to the supposition that any deductions about crystal fields for these paramagnetic garnets can also be applied to the corresponding ferrimagnetic ...
... Tb+3 and Ho+3, the results are very similar in both the Al and Ga compounds in contrast to the observed results for Dy+3 and Er+3; this gives some support to the supposition that any deductions about crystal fields for these paramagnetic garnets can also be applied to the corresponding ferrimagnetic ...
Solid State 2 – Homework 9 Use the Maxwell equation
... 2) The coexistence of the normal and superconducting states: a) We can use the Helmholtz free energy F(B,T,N) for cases where the magnetic field B inside a material is constant. But when we set the external magnetic field constant, we need to minimize a different energy: X(H,T,N) . Write an expressi ...
... 2) The coexistence of the normal and superconducting states: a) We can use the Helmholtz free energy F(B,T,N) for cases where the magnetic field B inside a material is constant. But when we set the external magnetic field constant, we need to minimize a different energy: X(H,T,N) . Write an expressi ...
s4rs-electrical-circuit-components
... comparison and recap • A resistor opposes the flow of current • A capacitor stores energy in an electric field • An inductor stores energy in a magnetic field • A diode allows current to flow in one direction while blocking current in the opposite direction ...
... comparison and recap • A resistor opposes the flow of current • A capacitor stores energy in an electric field • An inductor stores energy in a magnetic field • A diode allows current to flow in one direction while blocking current in the opposite direction ...
Giant magnetoresistance
Giant magnetoresistance (GMR) is a quantum mechanical magnetoresistance effect observed in thin-film structures composed of alternating ferromagnetic and non-magnetic conductive layers. The 2007 Nobel Prize in Physics was awarded to Albert Fert and Peter Grünberg for the discovery of GMR.The effect is observed as a significant change in the electrical resistance depending on whether the magnetization of adjacent ferromagnetic layers are in a parallel or an antiparallel alignment. The overall resistance is relatively low for parallel alignment and relatively high for antiparallel alignment. The magnetization direction can be controlled, for example, by applying an external magnetic field. The effect is based on the dependence of electron scattering on the spin orientation.The main application of GMR is magnetic field sensors, which are used to read data in hard disk drives, biosensors, microelectromechanical systems (MEMS) and other devices. GMR multilayer structures are also used in magnetoresistive random-access memory (MRAM) as cells that store one bit of information.In literature, the term giant magnetoresistance is sometimes confused with colossal magnetoresistance of ferromagnetic and antiferromagnetic semiconductors, which is not related to the multilayer structure.