PHYSICAL SCIENCE CHAPTER 7 (Magnetism and its uses) NOTES
... b) Magnetic field—refers to the area that contains the magnetic flux. Also known as the beta field. i) The more flux lines you have in a specific area the stronger the magnetic field is. ii) Magnetic flux lines never cross each other. c) Magnetic poles—are where the magnetic force exerted by the mag ...
... b) Magnetic field—refers to the area that contains the magnetic flux. Also known as the beta field. i) The more flux lines you have in a specific area the stronger the magnetic field is. ii) Magnetic flux lines never cross each other. c) Magnetic poles—are where the magnetic force exerted by the mag ...
Electricity and Magnetism
... Electromagnets Magnetic field is present only when current is flowing in the wire coil Increase strength of the magnetic field by adding coils to the wire or increasing the current flowing through the wire Magnetic properties of electromagnets can be controlled by changing the electric current flow ...
... Electromagnets Magnetic field is present only when current is flowing in the wire coil Increase strength of the magnetic field by adding coils to the wire or increasing the current flowing through the wire Magnetic properties of electromagnets can be controlled by changing the electric current flow ...
Electromagnetism
... moves towards or away from a coil of wire. Faster the magnet’s motion, the greater the current. ...
... moves towards or away from a coil of wire. Faster the magnet’s motion, the greater the current. ...
Interim Stations Review
... Station 4: Electrical Potential and Current 21c) construct and analyze simple series and parallel DC circuits in the laboratory 21d) illustrate and analyze through the use of Ohm’s Law steady-state DC circuits in series and parallel to determine the voltage across, current through, total resistance ...
... Station 4: Electrical Potential and Current 21c) construct and analyze simple series and parallel DC circuits in the laboratory 21d) illustrate and analyze through the use of Ohm’s Law steady-state DC circuits in series and parallel to determine the voltage across, current through, total resistance ...
Induction Applications
... Faraday’s law prevents the current in a circuit to reach the maximum value immediately. The magnetic flux through the loop increases together with the current. As a result, an induced emf appears and opposes the change in magnetic flux. The opposing emf results in a gradual increase of the current. ...
... Faraday’s law prevents the current in a circuit to reach the maximum value immediately. The magnetic flux through the loop increases together with the current. As a result, an induced emf appears and opposes the change in magnetic flux. The opposing emf results in a gradual increase of the current. ...
Practice exam with answers
... If the outer segment were a complete loop, then the magnetic field at point P would be " 5A % µI B = o = 2π E − 7T.m / A $ ' = 1.57E − 4T 2r # .02m) & out of the plane of the page. The magnetic field from the inner segment (if it were a complete loop) would be 3.14E-4T going into the plane of the pa ...
... If the outer segment were a complete loop, then the magnetic field at point P would be " 5A % µI B = o = 2π E − 7T.m / A $ ' = 1.57E − 4T 2r # .02m) & out of the plane of the page. The magnetic field from the inner segment (if it were a complete loop) would be 3.14E-4T going into the plane of the pa ...
NanoScan VLS-80 Dual-PLL Magnetic Force Microscopy - Ion-Tof
... controller. It further requires high vacuum which increases the Q-factor significantly, and thus sensitivity. NanoScan MFMs operate in high vacuum. The cantilever is excited both on its soft, fundamental mode and its stiffer first overtone. One PLL demodulates the cantilever response on the first ov ...
... controller. It further requires high vacuum which increases the Q-factor significantly, and thus sensitivity. NanoScan MFMs operate in high vacuum. The cantilever is excited both on its soft, fundamental mode and its stiffer first overtone. One PLL demodulates the cantilever response on the first ov ...
Physics 122B Electromagnetism
... An electron's inherent magnetic moment is often called the electron spin, because in a classical picture, a spinning ball of charge would have a magnetic moment. This classical picture is not a realistic portrayal of how the electron really behaves, but its inherent magnetic moment makes it seem as ...
... An electron's inherent magnetic moment is often called the electron spin, because in a classical picture, a spinning ball of charge would have a magnetic moment. This classical picture is not a realistic portrayal of how the electron really behaves, but its inherent magnetic moment makes it seem as ...
Study and Determination of Lande g-Factor of DPPH
... ESR precisely. This can be useful in determining the existence of free radicals in a material. Electrons have an intrinsic, quantized spin that results in a magnetic moment. When an external magnetic field is applied the magnetic moments of all the electrons align in parallel or antiparallel with th ...
... ESR precisely. This can be useful in determining the existence of free radicals in a material. Electrons have an intrinsic, quantized spin that results in a magnetic moment. When an external magnetic field is applied the magnetic moments of all the electrons align in parallel or antiparallel with th ...
Geomagnetism - Career Account Web Pages
... – Field vector is generally not vertical – Varies more rapidly with time ...
... – Field vector is generally not vertical – Varies more rapidly with time ...
Slide 1
... • Magnetization using an electric current – A solenoid (a length of copper wire wound into a long coil) is connected to a battery in series. – A iron bar is then placed inside the solenoid – The polarities depend no the direction of the flow of the current A magnet created in this way is ________ A) ...
... • Magnetization using an electric current – A solenoid (a length of copper wire wound into a long coil) is connected to a battery in series. – A iron bar is then placed inside the solenoid – The polarities depend no the direction of the flow of the current A magnet created in this way is ________ A) ...
3 Quantum Spin - McMaster Physics and Astronomy
... The Rutherford’s model of the atom with electrons revolving around a very small nucleus one naively expects atoms to possess a magnetic dipole moment. Bohr’s model with its quantized orbits suggests that the value of the magnetic moment should be quantized. In 1922 Stern and Gerlach conducted an exp ...
... The Rutherford’s model of the atom with electrons revolving around a very small nucleus one naively expects atoms to possess a magnetic dipole moment. Bohr’s model with its quantized orbits suggests that the value of the magnetic moment should be quantized. In 1922 Stern and Gerlach conducted an exp ...
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.