Problem Set 9
... captured. Why does this happen? (ii) Furthermore, these iron filings separate into clearly visible patterns of lines. Why don't the particles form a more even distributed pattern? Do these gaps/lines exist in the magnetic field itself? Answer Each particle of iron in a magnetic field becomes a tiny ...
... captured. Why does this happen? (ii) Furthermore, these iron filings separate into clearly visible patterns of lines. Why don't the particles form a more even distributed pattern? Do these gaps/lines exist in the magnetic field itself? Answer Each particle of iron in a magnetic field becomes a tiny ...
Chapter 11 Magnetism & Electromagnetism Magnets
... is the strongest. If a bar magnet is suspended by a thread or string, it will align itself so that one strong end points north and the other points south, hence the names for the “North” and “South” poles of the magnet. Like poles of separate magnets repel – push away from – each other ...
... is the strongest. If a bar magnet is suspended by a thread or string, it will align itself so that one strong end points north and the other points south, hence the names for the “North” and “South” poles of the magnet. Like poles of separate magnets repel – push away from – each other ...
Magnets
... In ferrous materials, clusters of atoms align their atoms with one another. A cluster of billions of atoms w/ magnetic fields aligned is called a domain. ...
... In ferrous materials, clusters of atoms align their atoms with one another. A cluster of billions of atoms w/ magnetic fields aligned is called a domain. ...
B . A = BA - RAJEEV Classes
... the current in an adjacent circuit which is linked to the first by the flux lines of a magnetic field. ...
... the current in an adjacent circuit which is linked to the first by the flux lines of a magnetic field. ...
Magnetic Force
... The torque is maximum when the loop is aligned with the field and zero when the field is at right angles to the loop (field goes straight through loop) ...
... The torque is maximum when the loop is aligned with the field and zero when the field is at right angles to the loop (field goes straight through loop) ...
Chapter 27 Questions
... 10. A singly charged positive ion has a mass of 3.2 x10-26 kg. After being accelerated through a potential difference of 833 V, the ion enters a magnetic field of 0.92 T along a direction perpendicular to the direction of the field. Calculate the radius of the path of the ion in the field. 11. A co ...
... 10. A singly charged positive ion has a mass of 3.2 x10-26 kg. After being accelerated through a potential difference of 833 V, the ion enters a magnetic field of 0.92 T along a direction perpendicular to the direction of the field. Calculate the radius of the path of the ion in the field. 11. A co ...
Junior Honours Thermodynamics Assessed Problem 3: Magnetic
... Background : This question examines the thermodynamics of magnetic refrigeration and the possibility of building a better domestic refrigerator than those based on gas-compression/expansion. It extends the simplified treatment given in the lectures. Magnetic refrigerators are commercially available ...
... Background : This question examines the thermodynamics of magnetic refrigeration and the possibility of building a better domestic refrigerator than those based on gas-compression/expansion. It extends the simplified treatment given in the lectures. Magnetic refrigerators are commercially available ...
Experiment 1: Thomson surrounded the cathode ray tube with a
... field and had sensors to measure small electrical charges (electrometers). The electrometers measured no change with magnets on the tube, indicating that the cathode rays had been bent by the magnetic field and therefore had negative charge. Diagram of cathode ray tube (with magnets) ...
... field and had sensors to measure small electrical charges (electrometers). The electrometers measured no change with magnets on the tube, indicating that the cathode rays had been bent by the magnetic field and therefore had negative charge. Diagram of cathode ray tube (with magnets) ...
File
... Electric and Magnetic Fields are Related Magnetic fields can produce ______________ currents in conductors (copper). Electromagnets – ______________ magnets that lose their magnetism when the electric current is turned off. o Magnet that runs on ______________. o An electromagnet works as the e ...
... Electric and Magnetic Fields are Related Magnetic fields can produce ______________ currents in conductors (copper). Electromagnets – ______________ magnets that lose their magnetism when the electric current is turned off. o Magnet that runs on ______________. o An electromagnet works as the e ...
Department of Physics
... rotations. Scalar product and its Invariance under rotations. Vector product. Scalar triple product and their interpretation in terms of area and volume respectively. Scalar and Vector fields Concept of irrotational & rotational vector fields (gradient of scalar field and curl of a vector field), Fi ...
... rotations. Scalar product and its Invariance under rotations. Vector product. Scalar triple product and their interpretation in terms of area and volume respectively. Scalar and Vector fields Concept of irrotational & rotational vector fields (gradient of scalar field and curl of a vector field), Fi ...
Magnetic Fields Produced by a Conductors
... In most materials, these magnetic fields cancel one another and neutralize the overall magnetic effect. In other materials, such as iron, cobalt, and nickel, the atoms behave as tiny magnets because of certain orientations of the electrons inside the atom. These atoms are grouped in a tiny reg ...
... In most materials, these magnetic fields cancel one another and neutralize the overall magnetic effect. In other materials, such as iron, cobalt, and nickel, the atoms behave as tiny magnets because of certain orientations of the electrons inside the atom. These atoms are grouped in a tiny reg ...
PHYS_3342_112211
... Magnetization of a substance M is its magnetic moment per unit volume (similar to polarization in case of dielectrics in electric fields) ...
... Magnetization of a substance M is its magnetic moment per unit volume (similar to polarization in case of dielectrics in electric fields) ...
Natural Science, Unit 8: Electricity and Magnetism
... The more magnetic something is, the bigger its magnetic field will be. The area around a magnet that attracts magnetic objects is called a magnetic field. We can see a magnetic field by putting a magnet in an area of magnetic iron filings. ...
... The more magnetic something is, the bigger its magnetic field will be. The area around a magnet that attracts magnetic objects is called a magnetic field. We can see a magnetic field by putting a magnet in an area of magnetic iron filings. ...
Physics Form 5 Syllabus
... As from September 2009, the unit ‘The Earth and the Universe’ was removed from the Form 5 syllabus. The section ‘Alternating Current’ was also removed from the Form 5 syllabus. ...
... As from September 2009, the unit ‘The Earth and the Universe’ was removed from the Form 5 syllabus. The section ‘Alternating Current’ was also removed from the Form 5 syllabus. ...
4.1.4 Summary to: Magnetic Materials - Definitions and General Relations
... The magnetic polarization J or the magnetization M are not given by some magnetic surface charge, because ⇒. ...
... The magnetic polarization J or the magnetization M are not given by some magnetic surface charge, because ⇒. ...
4.1.4 Summary to: Magnetic Materials - Definitions and General Relations
... that induces the polarization. Magnetic polarization mechanisms are formally similar to dielectric polarization mechanisms, but the physics can be entirely different. ...
... that induces the polarization. Magnetic polarization mechanisms are formally similar to dielectric polarization mechanisms, but the physics can be entirely different. ...
Game
... A material that conducts electric current poorly is called.. A- an insulator B- a circuit C- a charge D- a conductor ...
... A material that conducts electric current poorly is called.. A- an insulator B- a circuit C- a charge D- a conductor ...
questions with answers on electromagnetism
... The strength of the magnetic field is proportional to the current in the wire. If you double the current, the magnetic force is doubled. Since Voltage = Current x Resistance (V = I*R), you can double the current in a wire by doubling the voltage of the source of electricity. Turns of coil If you wra ...
... The strength of the magnetic field is proportional to the current in the wire. If you double the current, the magnetic force is doubled. Since Voltage = Current x Resistance (V = I*R), you can double the current in a wire by doubling the voltage of the source of electricity. Turns of coil If you wra ...
Ferrofluid
A ferrofluid (portmanteau of ferromagnetic and fluid) is a liquid that becomes strongly magnetized in the presence of a magnetic field.Ferrofluid was invented in 1963 by NASA's Steve Papell as a liquid rocket fuel that could be drawn toward a pump inlet in a weightless environment by applying a magnetic field.Ferrofluids are colloidal liquids made of nanoscale ferromagnetic, or ferrimagnetic, particles suspended in a carrier fluid (usually an organic solvent or water). Each tiny particle is thoroughly coated with a surfactant to inhibit clumping. Large ferromagnetic particles can be ripped out of the homogeneous colloidal mixture, forming a separate clump of magnetic dust when exposed to strong magnetic fields. The magnetic attraction of nanoparticles is weak enough that the surfactant's Van der Waals force is sufficient to prevent magnetic clumping or agglomeration. Ferrofluids usually do not retain magnetization in the absence of an externally applied field and thus are often classified as ""superparamagnets"" rather than ferromagnets.The difference between ferrofluids and magnetorheological fluids (MR fluids) is the size of the particles. The particles in a ferrofluid primarily consist of nanoparticles which are suspended by Brownian motion and generally will not settle under normal conditions. MR fluid particles primarily consist of micrometre-scale particles which are too heavy for Brownian motion to keep them suspended, and thus will settle over time because of the inherent density difference between the particle and its carrier fluid. These two fluids have very different applications as a result.