Tel: +86-13817790968
Email: [email protected]
Tel: +86-13817790968
Email: [email protected]
Electromagnets: are magnetic devices that use electricity to create a magnetizing field which can hold things together as well. The fun fact that intrigued me with this machine is that the system is found in most of the machines we tend to use today including trains and MIRs. So today, we are here to understand an interesting topic i.e., – how they work, where we see them pop up in our lives and then later on what can be the features of electromagnet in future.
What makes small disc magnets different from your everyday fridge magnets is that not only can you turn them on and off, you can also control the strength and, because they are powered by electrical energy (as we mentioned back in the Driving Force), deliver lots of power! When electricity is passed through them they act as magnets and lose their magnetic power when the electric current is turned off. The concept of electromagnets was first detected in 1820 by a Danish man named Hans Christian Oersted. He deduced that a flow of electricity through a wire could cause a compass needle to pivot from its usual position. This was an incredibly important discovery because it showed that electricity and magnetism were linked in a special combination.
Electromagnets use a coil of wire and an electric current to produce a magnetic field. A coil is just a very, very long piece of wire, wound around itself in a circle. This wire is usually wound around a metallic object, such as iron or steel, that further magnifies the power of the magnet. The magnetic field arises around the metal core when electricity flows in the wire. It creates a magnetic field, which can attract other nearby metal items towards it or can push them away. The control over the magnetism of electromagnet makes them highly desirable in many use-cases.
MRI Machines MRI machines are technological marvels that are used to take extremely detailed pictures of the inside of our bodies using strong steel and magnets. These images allow doctors to tell if someone is ill or if they need medical care. The images produced by these machines must be crystal clear and one of the important elements that produces precision in these images are powerful magnets.
Part 2:Electric Motors Electric motors are machinery or devices that use energy to rotate. For example, home appliances such as vacuum cleaners and fans all have electric motors; These are motors which convert electrical energy into movement with the help of electromagnets. Example: In the case of a vacuum cleaner, there is a motor used to turn an electromagnet that causes the spinning brush (not shown) to spin and sweep dirt and debris off the floor.
Generators: Generators are machines that also work on electromagnetic principles and produce electricity. The harness electromagnetic power to produce electricity. A current will be produced in a wireewhen it is pushed through a magnetic field. Generators work on these principles to help generating power for our homes or businesses.
With the continuous development of technology electromagnets will increasingly be relied upon in many different sectors. These big wind turbines, for example, all use strong magnets to turn wind energy into electricity. This is to achieve reduced, clean and green energy sources for a sustainable planet.
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