An electromagnet is a kind of magnet where the magnetic field is created by an electric current. The uses of electromagnets are given here to help learners understand the topic more effectively. Electromagnets can be considered as a temporary magnet that functions with the help of an electric current. The magnetic strength of an electromagnet can be easily altered by varying the amount of electric current and its polarity can be changed by varying the direction of the electric current.
Electromagnets are used for various purposes on a day-to-day basis. For example, electromagnets are used in the large cranes which are used in waste yards. Electromagnets are also widely used in numerous electromechanical and electronic devices. Some common uses are given below.
10 Uses of Electromagnets
- Generators, motors, and transformers
- Electric buzzers and bells
- Headphones and loudspeakers
- Relays and valves
- Data storage devices like VCRs, tape recorders, hard discs, etc.
- Induction cooker
- Magnetic locks
- MRI machines
- Particle accelerators
- Mass spectrometers
Uses in Home Appliances
Most of the electric appliances used in the home use electromagnetism as the basic working principle. Some electromagnet uses in the home include an electric fan, electric doorbell, induction cooker, magnetic locks, etc. In an electric fan, the electromagnetic induction keeps the motor rotating on and on making the blade of the fan to rotate. Also in an electric doorbell when the button is pressed, due to the electromagnetic forces the coil gets energized and the bell sounds.
Uses in Medical Field
The uses of electromagnets are also seen in the medical field. MRI scan which is short for Magnetic Resonance Imaging is a device that uses electromagnets. The device can scan all the tiny details in the human body with the help of electromagnetism.
Uses in Memory Storage Devices and Computer Hardware
The data in ebook gadgets and phones are stored in the electromagnetic format in the form of bytes and bits. The computer hardware is also having a magnetic tape which works on the principle of electromagnetism. Even in the olden days’ electromagnets had a huge role in the data storage of VCP and VCR.
Uses in Communication Devices and Power Circuits
Without electromagnets, the mobiles and the telephones we used to make phone calls over a long distance could not have taken shape. The electromagnetic pulses and the interaction of the signals make the mobiles and telephones very handy.
These were some application uses of electromagnets. Stay tuned with BYJU’S to learn more interesting Physics concepts with the help of interactive video lessons.