Magnet clamp repelling in coil - Physics Forums
2017年3月15日 · The purpose of using a magnet clamp to repel in a coil is to create a stable and controlled magnetic field. This can be useful in experiments or devices that require a specific magnetic field, such as electromagnets or generators.
Building a powerful electromagnet for repulsion
2013年12月24日 · In my experience (using magnets and designing metal detection equipment), 3 inches is a very long way for coils that might only have a diameter of about 1 inch. At 3 inches, if you used two similar magnets can you detect the repelling force (or attracting force)?
How Do Magnets Attract & Repel? - Sciencing
2017年4月24日 · Electric motors use this concept to operate. A motor shaft uses a series of coiled wires connected to source of electricity to become an electromagnet. The shaft alternates between positive and negative polarity, becoming attracted and repelled to the permanent magnets near it. This causes the motor shaft to spin and operate.
68.46 -- Magnetic fields of coils - UC Santa Barbara
When the two coils point in opposite directions, so that their north poles or south poles face each other, the coils repel. By bringing the freestanding coil next to the hanging coil, you can push the hanging coil aside, to an angle of perhaps as great as 30 degrees, with a gap of about 1/2 inch between the coils.
Thus, the induced magnetic field in the sample and the external fluctuating magnetic field of the coil repel each other. The induced magnetic field (and the sample) move away from its cause, i.e. away from the coil's magnetic field.
electromagnetism - Can an electromagnet repel a strong magnet ...
This core is magnetized by the electromagnetic coil. It retains a magnetic field after the coil is turned off, and its field may take some time to reverse after the coil polarity is reversed. Moreover, if the test magnet is more powerful than the coil (which sounds to be the case), it will cancel the field of the coil completely.
magnetics - Repelling a magnet from a coil - Electrical …
2020年10月8日 · I need to suspend an object attached to a magnet over a coil (don't worry about stability problems), and measure the current required to levitate it to a certain height. There are a number of possible configurations: Air core coil with a cylindrical magnet over the coil; Air core coil with a cylindrical magnet which passes into the coil
Magnetic Spring Pogo Stick | K&J Magnetics Blog
Should you use repelling magnets instead of a coil spring in your next device? As with so many magnet answers, it depends. Do they give you the performance you want where you need it?
Generating electricity through magnetic repullsion
2011年6月30日 · To generate electricity through magnetic repulsion, you will need two strong magnets, a coil of wire, a power source, and a way to measure the electric current produced. You may also need a support structure to hold the magnets and coil in place. How can I increase the amount of electricity generated?
Why do the turns of an electromagnet repel one another?
2020年7月24日 · The leakage field lines between each turn of the coil exert a repulsive force between adjacent turns, tending to push them apart. Ampere's Force Law states that wires with current travelling in the same direction attract one another.