SOLENOIDS PHYSICS COURSEWORK
The direction of a magnetic field line is from the north seeking pole of a magnet to the south seeking pole of the magnet. Home Papers Solenoids – Physics coursework. The force between a magnet and a magnetic material is always one of attraction. Adding an iron core increases the strength of the magnetic field of a solenoid. If the end is taken so far from the coil that the field is negligible, then the length inside the coil is the dominant contribution. Two like poles repel each other. Students should be able to explain how the force on a conductor in a magnetic field causes the rotation of the coil in an electric motor.
I think I can offer an explanation that may help.
Are you guessing or do you have a rationale for that answer? How do you expect us to help you if you don’t show your work? Last edited by a moderator: Similar like magnetic poles repel. With a solenoid, you are artificially creating a magnetic field that points along the axis of the solenoid.
SS: Magnetic field due to current in a solenoid
I’d expect it to follow the magnetic lines, but in all diagrams I see, it goes straight and I do not understand why. An electromagnet consists of a coil of wine, through which a current can be passed, wrapped around a soft iron core.
Get custom essay sample written according to your requirements Urgent 3h delivery guaranteed Order Now. Solenoid A long straight coil of wire can be used to generate a nearly uniform magnetic field similar to that of a solenoies magnet.
Field lines by convention go from North to South. Students should be able to recall the factors that affect the size of the force on the conductor. Thread starter Solrnoids Start date Jul 24, Tags coil electromagentic field forces solenoid. Attraction and repulsion between two magnetic poles are examples of non-contact force. The expression is an idealization to an infinite silenoids solenoid, but provides a good approximation to the field of a slenoids solenoid.
The magnetic field inside a solenoid is strong and uniform. An induced magnet is a material that becomes a magnet when it is placed in a magnetic field. If the end is taken so far from the coil that the field is negligible, then the length inside the coil is the dominant contribution.
Solenoid Diagram | Physics Forums
But I’m really confused as to which way the inner force would point, and how to draw it. Is there a rule or concept I missed?
Pphysics and headphones use the motor effect to convert variations in current in electrical circuits to the pressure variations in sound waves.
The strength of the magnetic field depends on the distance from the magnet. Students should be able to interpret diagrams of electromagnetic devices in order to explain how they work.
At the center of a long solenoid. The National Grid is a system of cables and transformers linking power stations to consumers. Ferromagnetic materials exhibit a long-range ordering phenomenon at the atomic level which causes the unpaired solenoidx spins to line up parallel with each other in a region called a domain.
Knowledge of laminations and eddy currents in the core is not required. Students should be able to explain why the National Grid system is an efficient way to transfer energy. This admittedly idealized case for Ampere’s Law gives This turns out to be a good approximation for the solenoid field, particularly in the case of an iron core solenoid.
I think you have already figured out that the magnetic field in the solenoid points from left to right. The field is essentially perpendicular to the sides of the path, giving negligible contribution.
Solenoids – Physics coursework
Homework Help Introductory Physics Homework. Assuming the “solenoids” are thick-walled metal cylinders with a hole through the middle, what direction would a steel bead move if placed there and the current turned on?