Explain the concept of magnetomotive force and its analogy to electromotive force in electrical circuits.

Turning off the current turns off the electromagnet. To understand how electromagnets are used in electric devices, we'll focus on two common devices ... Inside them they have an electric current that makes a magnetic field. Mostly electromagnets are used a lot in junkyards for moving very heavy objects, so that ... Large electro-magnets are extensively used for handling iron and steel in a variety of sectors. · Lifting Electro-Magnet Protection. ... electromagnets for applications that involve magnetic circuits. ... In an electromagnet, the amount of electric current used determines the magnet's strength. Sep 21, 2019 ... The electromagnets are frequently used in all classes of electrical machines like motor, generator, speaker and magnetic imaging machine in the hospital. Mar 28, 2020 ... An electromagnet is characterized on the one hand by its magnetic effect and on the other hand by being dependent on a power source of electrical energy. Mar 26, 2025 ... 2024 This includes magnetohydrodynamics – which uses plasmas controlled by electromagnets, instead of gases, to keep temperatures down. This creates a magnetic field around the coiled wire, magnetizing the metal as if it were a permanent magnet. Electromagnets are useful because you can turn the ... May 19, 2020 ... Electromagnets are used because their field can be controlled by the excitation system, which in turn regulates the output. I believe some wind ... Sep 15, 2016 ... Your optocoupler input is somewhat lacking. To all intents and purposes an optocoupler is an NPN transistor. It's just controlled by light ...