Unit 14* Magnetic Induction
... of induced voltage are: a. the number of turns of wire. b. the strength of the magnetic field. c. the speed of the magnetic flux cutting ...
... of induced voltage are: a. the number of turns of wire. b. the strength of the magnetic field. c. the speed of the magnetic flux cutting ...
magsources
... •Suppose we have a wire coming out of the plane •Let’s integrate the magnetic field around a closed path B 0 I 2 a •There’s a funky new symbol for such an integral •Circle means “over a closed loop” •The magnetic field is parallel to direction of integration ds cos 0 I B ds B ds 2 r ...
... •Suppose we have a wire coming out of the plane •Let’s integrate the magnetic field around a closed path B 0 I 2 a •There’s a funky new symbol for such an integral •Circle means “over a closed loop” •The magnetic field is parallel to direction of integration ds cos 0 I B ds B ds 2 r ...
Title of PAPER - Department of Physics and Astronomy
... Due to the increasing population of the Earth and the constraints this will cause on the resources available, there has been much talk of moving to other planets. Mars is a prime target for future expansion due to its location in the solar system. However, Mars’ magnetosphere is currently too weak t ...
... Due to the increasing population of the Earth and the constraints this will cause on the resources available, there has been much talk of moving to other planets. Mars is a prime target for future expansion due to its location in the solar system. However, Mars’ magnetosphere is currently too weak t ...
Lecture
... – Amperes’ Law : Analogous to Gauss’ L:aw in electrostatics, Useful in symmetric cases. – Infinitely long straight wire of radius a. Find B outside and inside wire. – Solenoid and Toroid Find B field. – Forces between current carrying wires or parallel moving charges Demos – Torque on a current loop ...
... – Amperes’ Law : Analogous to Gauss’ L:aw in electrostatics, Useful in symmetric cases. – Infinitely long straight wire of radius a. Find B outside and inside wire. – Solenoid and Toroid Find B field. – Forces between current carrying wires or parallel moving charges Demos – Torque on a current loop ...
Sources of magnetic fields
... so the iron has no net magnetic field. But when you hold a magnet up to the iron, the magnet makes the iron atoms line up. These lined-up atomic magnets turn the iron into a magnet. The iron is then attracted to the original magnet. High temperatures can disturb this process of magnetization. Therma ...
... so the iron has no net magnetic field. But when you hold a magnet up to the iron, the magnet makes the iron atoms line up. These lined-up atomic magnets turn the iron into a magnet. The iron is then attracted to the original magnet. High temperatures can disturb this process of magnetization. Therma ...
EE4301 sp06 Class Sy..
... *Homework and Notes handed in after the due date will not be counted! This rule will be strictly enforced! (This means that the homework/notes can be slid under my door that night. I usually arrive at ~8 AM.) ...
... *Homework and Notes handed in after the due date will not be counted! This rule will be strictly enforced! (This means that the homework/notes can be slid under my door that night. I usually arrive at ~8 AM.) ...
Electromagnetic Induction Key Concept is Magnetic Flux
... oppose the applied force. This obbservation can be generalized into: Lenz’s Law The direction of any magnetic induction effect is such as to oppose the cause of the effect ...
... oppose the applied force. This obbservation can be generalized into: Lenz’s Law The direction of any magnetic induction effect is such as to oppose the cause of the effect ...
Unit 8J Magnets and electromagnets About the unit
... • Show pupils examples of solenoid coils acting as electromagnets, eg bell, buzzer, relay, etc. Ask them to make a coil, eg from insulated wire around a wooden dowel, and connect it to a low-voltage power supply and observe effects. • Ask pupils to plan how to investigate the factors that affect the ...
... • Show pupils examples of solenoid coils acting as electromagnets, eg bell, buzzer, relay, etc. Ask them to make a coil, eg from insulated wire around a wooden dowel, and connect it to a low-voltage power supply and observe effects. • Ask pupils to plan how to investigate the factors that affect the ...
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.