Magnetic Jeopardy
... 18. According to Lenz's law the direction of an induced current in a conductor will be that which tends to produce which of the following effects? a. enhance the effect which produces it b. produce a greater heating effect c. produce the greatest voltage d. oppose the effect which produces it e. pr ...
... 18. According to Lenz's law the direction of an induced current in a conductor will be that which tends to produce which of the following effects? a. enhance the effect which produces it b. produce a greater heating effect c. produce the greatest voltage d. oppose the effect which produces it e. pr ...
ISNS3371_041907_bw
... The electron spins on its axis, giving rise to a electron current in the direction of rotation. The electron is like a magnetic dipole, a miniature magnet, with a north end and a south end. In most substances, electrons spin in random directions - magnetic fields cancel. For iron and other magnetic ...
... The electron spins on its axis, giving rise to a electron current in the direction of rotation. The electron is like a magnetic dipole, a miniature magnet, with a north end and a south end. In most substances, electrons spin in random directions - magnetic fields cancel. For iron and other magnetic ...
EE-0903251-Electromagnetics I-Sep-2014-Fall
... Introduction. Vectors and vector operations. Coordinate systems. Coulomb’s law and electric field. Potential and gradient. Electric flux density. Gauss law and divergence theorem. Electric fields in material space. Capacitors. Boundary conditions, Poisson’s and Laplace’s equations. Method of images. ...
... Introduction. Vectors and vector operations. Coordinate systems. Coulomb’s law and electric field. Potential and gradient. Electric flux density. Gauss law and divergence theorem. Electric fields in material space. Capacitors. Boundary conditions, Poisson’s and Laplace’s equations. Method of images. ...
Why is the aurora borealis visible from some parts of the world and
... Why is the aurora borealis visible from some parts of the world and not others? We’ve learned that an aurora borealis occurs when particles from the sun’s solar winds hits the Earth’s atmosphere at an angle and this can only happen at the poles of the Earth. Just like a small magnet, the Earth’s mag ...
... Why is the aurora borealis visible from some parts of the world and not others? We’ve learned that an aurora borealis occurs when particles from the sun’s solar winds hits the Earth’s atmosphere at an angle and this can only happen at the poles of the Earth. Just like a small magnet, the Earth’s mag ...
magnetic field
... • There are two magnetic fields, H and B. In a vacuum they are indistinguishable, differing only by a multiplicative constant that depends on the physical units. Inside a material they are different. The term magnetic field is historically reserved for H while using other terms for B. Informally, th ...
... • There are two magnetic fields, H and B. In a vacuum they are indistinguishable, differing only by a multiplicative constant that depends on the physical units. Inside a material they are different. The term magnetic field is historically reserved for H while using other terms for B. Informally, th ...
Lesson Plan
... Figure 1. A needle is normally not a magnet because its magnetic domains are not aligned (left). When a needle contacts a permanent magnet for an extended time (or is rubbed along a permanent magnet), its magnet domains align in the same direction, forming a temporary magnet with a magnetic field ( ...
... Figure 1. A needle is normally not a magnet because its magnetic domains are not aligned (left). When a needle contacts a permanent magnet for an extended time (or is rubbed along a permanent magnet), its magnet domains align in the same direction, forming a temporary magnet with a magnetic field ( ...
ASSIGNMENT ON PHYSICS CLASS:12 DATE:18-O4
... charges, each equal to +2C are placed at the corners of an equilateral triangle. If the force between any two charges be F, then what will be the net force on either Charge? 7. A point charge q is placed at O as shown in the figure. Is VP-VQ +ve or –ve when (i) q>0, (ii) q<0? Justify your answer. 8. ...
... charges, each equal to +2C are placed at the corners of an equilateral triangle. If the force between any two charges be F, then what will be the net force on either Charge? 7. A point charge q is placed at O as shown in the figure. Is VP-VQ +ve or –ve when (i) q>0, (ii) q<0? Justify your answer. 8. ...
Force between magnets
Magnets exert forces and torques on each other due to the complex rules of electromagnetism. The forces of attraction field of magnets are due to microscopic currents of electrically charged electrons orbiting nuclei and the intrinsic magnetism of fundamental particles (such as electrons) that make up the material. Both of these are modeled quite well as tiny loops of current called magnetic dipoles that produce their own magnetic field and are affected by external magnetic fields. The most elementary force between magnets, therefore, is the magnetic dipole–dipole interaction. If all of the magnetic dipoles that make up two magnets are known then the net force on both magnets can be determined by summing up all these interactions between the dipoles of the first magnet and that of the second.It is always more convenient to model the force between two magnets as being due to forces between magnetic poles having magnetic charges 'smeared' over them. Such a model fails to account for many important properties of magnetism such as the relationship between angular momentum and magnetic dipoles. Further, magnetic charge does not exist. This model works quite well, though, in predicting the forces between simple magnets where good models of how the 'magnetic charge' is distributed is available.