10th CBSE {SA - 1} Revision Pack Booklet - 4
... plastic sheet to cover the open face of the box. He found that this cooker does not function well. What modification should he make to enhance its efficiency? Give reason. Mention the maximum temperature that can be reached in a box type solar cooker. Solution: The student should replace the back tr ...
... plastic sheet to cover the open face of the box. He found that this cooker does not function well. What modification should he make to enhance its efficiency? Give reason. Mention the maximum temperature that can be reached in a box type solar cooker. Solution: The student should replace the back tr ...
OSEE_inductance_pape..
... This can be illustrated by considering a "Y" shape pipe of magnetic material (Figure 1b). If we assume that the fields are uniform and confined to the pipe, Gauss' law shows that: B1 A1 B2 A2 B3 A3 Faraday's law shows the mechanisms by which a changing magnetic flux generates eddy currents in a ...
... This can be illustrated by considering a "Y" shape pipe of magnetic material (Figure 1b). If we assume that the fields are uniform and confined to the pipe, Gauss' law shows that: B1 A1 B2 A2 B3 A3 Faraday's law shows the mechanisms by which a changing magnetic flux generates eddy currents in a ...
1st lecture The Maxwell equations
... Thus we can see that in this case there are only one variable for the electric field E, and another variable H for the magnetic field. In other words the introduction of two more variables D and B (or P and M ) is necessary only if we have not only vacuum, but some material is also present. To deter ...
... Thus we can see that in this case there are only one variable for the electric field E, and another variable H for the magnetic field. In other words the introduction of two more variables D and B (or P and M ) is necessary only if we have not only vacuum, but some material is also present. To deter ...
ELECTRICITY LAB (GROUP LAB) USE THE EQUIPMENT IN THE
... pole on the coil and repels its like pole, causing the coil to spin. Another way to describe the operation of the motor is to say that the permanent magnets exert forces on the electrical currents flowing through the loop of wire. When the loop of wire is in a vertical plane, the forces on the top a ...
... pole on the coil and repels its like pole, causing the coil to spin. Another way to describe the operation of the motor is to say that the permanent magnets exert forces on the electrical currents flowing through the loop of wire. When the loop of wire is in a vertical plane, the forces on the top a ...
NMR - Faculty
... which they are derived, magnetic fields exist as dipoles, where the north pole is the origin of the magnetic field lines and the south pole is the return. ...
... which they are derived, magnetic fields exist as dipoles, where the north pole is the origin of the magnetic field lines and the south pole is the return. ...
Torque On A Current Loop In A Uniform Magnetic Field
... • The direction of the torque is also given by the right hand rule: point the fingers of the right hand in the direction of the area vector A, the palm points in the direction of the magnetic field B, the thumb points in the direction of the torque. • The product I·A is defined as the magnetic momen ...
... • The direction of the torque is also given by the right hand rule: point the fingers of the right hand in the direction of the area vector A, the palm points in the direction of the magnetic field B, the thumb points in the direction of the torque. • The product I·A is defined as the magnetic momen ...
Application of NMR techniques in studying the dynamics of some
... An important objective of polymer science is to establish a relationships between the microscopic structure or molecular dynamics and the macroscopic properties of materials. This knowledge allows then the design of new polymers with improved properties. By employing various NMR techniques it is pos ...
... An important objective of polymer science is to establish a relationships between the microscopic structure or molecular dynamics and the macroscopic properties of materials. This knowledge allows then the design of new polymers with improved properties. By employing various NMR techniques it is pos ...
MRI
... A. Spin Physics Magnetic resonance imaging makes use of a fundamental property called spin. Protons, electrons, and neutrons all posses spin, either + or – ½. Because of the positive and negative factors, spins can pair up and cancel each other. Unpaired, nuclear spins are utilized in NMR. However, ...
... A. Spin Physics Magnetic resonance imaging makes use of a fundamental property called spin. Protons, electrons, and neutrons all posses spin, either + or – ½. Because of the positive and negative factors, spins can pair up and cancel each other. Unpaired, nuclear spins are utilized in NMR. However, ...
Electricity and Magnetism - The University of Sydney
... of electromagnetism and electromagnetic radiation. By the end of this module, you should be able to describe electric and magnetic fields and their effects on charges and currents, understanding each field as an alternative way of describing the corresponding force. ...
... of electromagnetism and electromagnetic radiation. By the end of this module, you should be able to describe electric and magnetic fields and their effects on charges and currents, understanding each field as an alternative way of describing the corresponding force. ...
pptx - Weizmann Institute of Science
... varies with temperature. It was later shown that the chemical shift for this proton was also dependent on the solvent. These results were explained by hydrogen bonding. 1952 Bloch and Purcell share the Nobel prize in physics This prize was awarded 'for their development of new methods for nuclear ma ...
... varies with temperature. It was later shown that the chemical shift for this proton was also dependent on the solvent. These results were explained by hydrogen bonding. 1952 Bloch and Purcell share the Nobel prize in physics This prize was awarded 'for their development of new methods for nuclear ma ...
Maxwell`s Equations, Part V
... In mid-1820, Danish physicist Hans Oersted discovered that a current in a wire can affect the magnetic needle of a compass. These experiments were quickly confirmed by François Arago and, more exhaustively, André Marie Ampère. Ampère’s work demonstrated that the effects generated, which defined a so ...
... In mid-1820, Danish physicist Hans Oersted discovered that a current in a wire can affect the magnetic needle of a compass. These experiments were quickly confirmed by François Arago and, more exhaustively, André Marie Ampère. Ampère’s work demonstrated that the effects generated, which defined a so ...
The principles of electromagnetic induction
... To step up the input voltage by a factor of 16 there must be 16 times as many turns on the secondary coil as the primary A step up increases voltage (more turns) A step down decreases voltage (less turns) If voltage is stepped up the current must be ...
... To step up the input voltage by a factor of 16 there must be 16 times as many turns on the secondary coil as the primary A step up increases voltage (more turns) A step down decreases voltage (less turns) If voltage is stepped up the current must be ...
C h a p t e r 2
... (fields are varying slower with time). Secondly, the smoke-rings will also cause galvanic currents to flow in the conductor and lead to charge accumulation on the boundaries between the conductor and the host rock. The smoke-ring electric field will instantaneously be opposed within the target by th ...
... (fields are varying slower with time). Secondly, the smoke-rings will also cause galvanic currents to flow in the conductor and lead to charge accumulation on the boundaries between the conductor and the host rock. The smoke-ring electric field will instantaneously be opposed within the target by th ...
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 ...
Design and Manufacturing of a Research Magnetic Torquer Rod
... generating static magnetic fields in devices such as electric motors [15]. ...
... generating static magnetic fields in devices such as electric motors [15]. ...
notes
... 2. Lava solidifies a. iron-bearing minerals crystallize b. align with Earth’s magnetic field ...
... 2. Lava solidifies a. iron-bearing minerals crystallize b. align with Earth’s magnetic field ...
As the name suggests, the VCS10 uses voice coil technology to
... radiating through the coil of the moving member. Simple electromagnetics tells us that a force is exerted on a current carrying conductor when placed in a magnetic field. By applying a voltage across the leads of the coil, the magnetic field produces a force on the moving member, creating linear mot ...
... radiating through the coil of the moving member. Simple electromagnetics tells us that a force is exerted on a current carrying conductor when placed in a magnetic field. By applying a voltage across the leads of the coil, the magnetic field produces a force on the moving member, creating linear mot ...
Electromagnetic Induction
... emf and current which will oppose the driving current. If a soft iron core is inserted in the coil, the induced magnetic field, and hence back emf is greater, so the overall current is even less. ...
... emf and current which will oppose the driving current. If a soft iron core is inserted in the coil, the induced magnetic field, and hence back emf is greater, so the overall current is even less. ...
Activity 3: Shake it up!
... designed a type of generator that moves magnets through coils of wire to create current and because it was so efficient, this is the type of power we use. DC, or direct current is the type of current that comes from a battery. The current is always flowing in the same direction, like a stream. Ediso ...
... designed a type of generator that moves magnets through coils of wire to create current and because it was so efficient, this is the type of power we use. DC, or direct current is the type of current that comes from a battery. The current is always flowing in the same direction, like a stream. Ediso ...
Particle motion (powerpoint)
... ions is around 4 mm for the electrons around 0.07 mm Note that the alpha particles have an energy of 3.5 MeV and consequently a Larmor radius of 5.4 cm Typical values of the cyclotron frequency are 80 MHz for Hydrogen and 130 GHz for the electrons Often the frequency is much larger than that of the ...
... ions is around 4 mm for the electrons around 0.07 mm Note that the alpha particles have an energy of 3.5 MeV and consequently a Larmor radius of 5.4 cm Typical values of the cyclotron frequency are 80 MHz for Hydrogen and 130 GHz for the electrons Often the frequency is much larger than that of the ...
If you move a bar magnet toward a loop of wire, it causes an electric
... Watch out for the gotcha: you must point your left thumb in the direction of ⃗ , not ⃗ ! The changing flux “inserts” an imaginary battery of voltage into the circuit. If the loop is a circle of radius , the emf creates a uniform electric field along the loop of magnitude ...
... Watch out for the gotcha: you must point your left thumb in the direction of ⃗ , not ⃗ ! The changing flux “inserts” an imaginary battery of voltage into the circuit. If the loop is a circle of radius , the emf creates a uniform electric field along the loop of magnitude ...
eddy current brake
... should know its derivation which, as given by Maxwell, is difficult for modern students to follow. A simplified proof which brings out the points essential for our problem is given below. The object is to calculate the magnetic induction Β produced by the eddy curcents of density ί induced in a thin ...
... should know its derivation which, as given by Maxwell, is difficult for modern students to follow. A simplified proof which brings out the points essential for our problem is given below. The object is to calculate the magnetic induction Β produced by the eddy curcents of density ί induced in a thin ...
Magnet
A magnet (from Greek μαγνήτις λίθος magnḗtis líthos, ""Magnesian stone"") is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. An everyday example is a refrigerator magnet used to hold notes on a refrigerator door. Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic). These include iron, nickel, cobalt, some alloys of rare earth metals, and some naturally occurring minerals such as lodestone. Although ferromagnetic (and ferrimagnetic) materials are the only ones attracted to a magnet strongly enough to be commonly considered magnetic, all other substances respond weakly to a magnetic field, by one of several other types of magnetism.Ferromagnetic materials can be divided into magnetically ""soft"" materials like annealed iron, which can be magnetized but do not tend to stay magnetized, and magnetically ""hard"" materials, which do. Permanent magnets are made from ""hard"" ferromagnetic materials such as alnico and ferrite that are subjected to special processing in a powerful magnetic field during manufacture, to align their internal microcrystalline structure, making them very hard to demagnetize. To demagnetize a saturated magnet, a certain magnetic field must be applied, and this threshold depends on coercivity of the respective material. ""Hard"" materials have high coercivity, whereas ""soft"" materials have low coercivity.An electromagnet is made from a coil of wire that acts as a magnet when an electric current passes through it but stops being a magnet when the current stops. Often, the coil is wrapped around a core of ""soft"" ferromagnetic material such as steel, which greatly enhances the magnetic field produced by the coil.The overall strength of a magnet is measured by its magnetic moment or, alternatively, the total magnetic flux it produces. The local strength of magnetism in a material is measured by its magnetization.