The Ionosphere
... resulting in the transfer of energy, mass, and momentum from the solar wind flow to magnetosphere. The strongest coupling –with the most ...
... resulting in the transfer of energy, mass, and momentum from the solar wind flow to magnetosphere. The strongest coupling –with the most ...
Question bank of magnetism - Kendriya Vidyalaya SAC, Vastrapur
... and B respectively. For what values of the electron speed the beam will remain undeflected? 2. Write any three characteristics of Ferro magnetic substance should possesses if it is to be used to make a permanent magnet.. Give an example of such a material. 3. If χ stands for the magnetic susceptibil ...
... and B respectively. For what values of the electron speed the beam will remain undeflected? 2. Write any three characteristics of Ferro magnetic substance should possesses if it is to be used to make a permanent magnet.. Give an example of such a material. 3. If χ stands for the magnetic susceptibil ...
Chapter 18 Electric Circuits
... Resistance, R, represents to what extent the current can flow freely in the circuit, i.e. the larger R, the more the electrons scatter with atoms in the material. These scatterings slow down electrons and transfer energy as heat to the material. ...
... Resistance, R, represents to what extent the current can flow freely in the circuit, i.e. the larger R, the more the electrons scatter with atoms in the material. These scatterings slow down electrons and transfer energy as heat to the material. ...
here
... (photomultiplier tube). The PMTs are very sensitive to magnetic field. In order to make them work properly, the magnetic field on them must be less than 0.1G. Therefore, they are enclosed with Mu-metal, which has a very high magnetic permeability and is very good at screening DC magnetic field. Also ...
... (photomultiplier tube). The PMTs are very sensitive to magnetic field. In order to make them work properly, the magnetic field on them must be less than 0.1G. Therefore, they are enclosed with Mu-metal, which has a very high magnetic permeability and is very good at screening DC magnetic field. Also ...
Kerala Board Class - X 2010 science Time: 4½ Hrs Score 120
... 1. A few drops of sulphuric acid are added into water before electrolysis. Why ? 2. Give an example of a metal which is a liquid at room temperature. 3. Give one limitation of harnessing energy from Geothermal sources. 4. The resistance of a resistor is kept constant and the potential difference acr ...
... 1. A few drops of sulphuric acid are added into water before electrolysis. Why ? 2. Give an example of a metal which is a liquid at room temperature. 3. Give one limitation of harnessing energy from Geothermal sources. 4. The resistance of a resistor is kept constant and the potential difference acr ...
Nuclear Magnetism and NMR Spectroscopy
... • Spin angular momentum can be described using a vector I whose direction and magnitude are quantized. • The length of I is I I +1 ħ with 2I + 1 projections along the axis of the applied magnetic field. • The magnetic moment µ is related to the spin angular momentum I by µ = γ I where γ is the magne ...
... • Spin angular momentum can be described using a vector I whose direction and magnitude are quantized. • The length of I is I I +1 ħ with 2I + 1 projections along the axis of the applied magnetic field. • The magnetic moment µ is related to the spin angular momentum I by µ = γ I where γ is the magne ...
9J. Higher Revision Questions.
... 15. A rod made of a different material also gets a positive charge when rubbed with a duster. What will happen to the two rods if they are put close to each other? 16. If you rub your hair with a balloon, some strands of hair stick out from your head. Use ideas about static electricity to explain wh ...
... 15. A rod made of a different material also gets a positive charge when rubbed with a duster. What will happen to the two rods if they are put close to each other? 16. If you rub your hair with a balloon, some strands of hair stick out from your head. Use ideas about static electricity to explain wh ...
F5 Physics Second Term Test (14-15)
... (ii) Explain what might happen if a kettle designed to operate at 110 V is connected to a 220 V supply. (2 marks) ____________________________________________________________________________________ ____________________________________________________________________________________ _______________ ...
... (ii) Explain what might happen if a kettle designed to operate at 110 V is connected to a 220 V supply. (2 marks) ____________________________________________________________________________________ ____________________________________________________________________________________ _______________ ...
Conceptests II
... - What is the final potential at point b? - What are the charges of the capacitors? -How much charge flows through the switch after it is closed? ...
... - What is the final potential at point b? - What are the charges of the capacitors? -How much charge flows through the switch after it is closed? ...
AAAAMotors and Magnets
... conventional current flow, your four fingers will show the direction of the magnetic field o ...
... conventional current flow, your four fingers will show the direction of the magnetic field o ...
Tuesday, Oct. 16, 2012 - UTA HEP WWW Home Page
... vertically as shown in the figure. A magnetic field B is directed horizontally perpendicular to the wire, and points out of the page. The magnetic field B is very nearly uniform along the horizontal portion of wire ab (length l=10.0cm) which is near the center of a large magnet producing the field. ...
... vertically as shown in the figure. A magnetic field B is directed horizontally perpendicular to the wire, and points out of the page. The magnetic field B is very nearly uniform along the horizontal portion of wire ab (length l=10.0cm) which is near the center of a large magnet producing the field. ...
Hewitt/Lyons/Suchocki/Yeh, Conceptual Integrated Science
... particles depends on the product of their charges and their distance of separation, as specified in Coulomb’s law. • If the charged particles are moving with respect to each other, there is an additional force between them, called the magnetic force. • The electric and magnetic forces turn out to be ...
... particles depends on the product of their charges and their distance of separation, as specified in Coulomb’s law. • If the charged particles are moving with respect to each other, there is an additional force between them, called the magnetic force. • The electric and magnetic forces turn out to be ...
Hewitt/Lyons/Suchocki/Yeh, Conceptual Integrated Science
... • Unusual stones were found by the Greeks more than 2000 years ago. • These stones, called lodestones, had the intriguing property of attracting pieces of iron. • Magnets were first fashioned into compasses and used for navigation by the Chinese in the 12th century. © 2010 Pearson Education, Inc. ...
... • Unusual stones were found by the Greeks more than 2000 years ago. • These stones, called lodestones, had the intriguing property of attracting pieces of iron. • Magnets were first fashioned into compasses and used for navigation by the Chinese in the 12th century. © 2010 Pearson Education, Inc. ...
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.