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L 28 Electricity and Magnetism [5]
... Magnetic forces • Magnetic fields exert sidewise forces on charges • A charge is turned around by the magnetic force • There is NO magnetic force if the charge is ...
... Magnetic forces • Magnetic fields exert sidewise forces on charges • A charge is turned around by the magnetic force • There is NO magnetic force if the charge is ...
MAGNETISM
... Magnes who discovered that the iron tip on his staff was mysteriously attracted to a rock.) This rock was a naturally occurring magnetic rock called lodestone. • Show students a piece of magnetite, and show them that a small magnet is attracted to it. • The mariners compass was the first important m ...
... Magnes who discovered that the iron tip on his staff was mysteriously attracted to a rock.) This rock was a naturally occurring magnetic rock called lodestone. • Show students a piece of magnetite, and show them that a small magnet is attracted to it. • The mariners compass was the first important m ...
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... The _____________ of ____________________ is not evenly _________________ throughout a magnet. _____________ ____________are the parts of a ________________ where the magnetism is the ___________________. Every magnet has ____________ magnetic poles. If a bar magnet is __________________ so that it ...
... The _____________ of ____________________ is not evenly _________________ throughout a magnet. _____________ ____________are the parts of a ________________ where the magnetism is the ___________________. Every magnet has ____________ magnetic poles. If a bar magnet is __________________ so that it ...
ELECTRICITY AND MAGNETISM The magnetic field created by an
... and “south” because they line up with the Earth’s axis. ...
... and “south” because they line up with the Earth’s axis. ...
Chapter 15 - Cloudfront.net
... One of the ways to cause an atom to gain or lose electrons is with friction. When an objects “rub” against each other, the electrons can “rub off” one object onto another. ...
... One of the ways to cause an atom to gain or lose electrons is with friction. When an objects “rub” against each other, the electrons can “rub off” one object onto another. ...
Using Electricity to Produce Magnetism
... the property of attracting or repelling iron magnetism. Scientists have found that electric currents produce magnetic fields the same way that magnets do. In other words, electricity produces magnetism. We call the magnetic forces produced by ...
... the property of attracting or repelling iron magnetism. Scientists have found that electric currents produce magnetic fields the same way that magnets do. In other words, electricity produces magnetism. We call the magnetic forces produced by ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI
... 100 mega ohms is reduced to half of its maximum value, calculate the time of leakage. 8. Why choke coil is preferred to a resistor in a circuit? 9. Define magnetic susceptibility and magnetic permeability. 10. Define Poynting vector. PART – B Answer any FOUR questions. ...
... 100 mega ohms is reduced to half of its maximum value, calculate the time of leakage. 8. Why choke coil is preferred to a resistor in a circuit? 9. Define magnetic susceptibility and magnetic permeability. 10. Define Poynting vector. PART – B Answer any FOUR questions. ...
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.