Compare the Difference Between Similar Terms

Difference Between

Home / Science & Nature / Science / Chemistry / Industrial Chemistry / Difference Between Bar Magnet and Electromagnet

Difference Between Bar Magnet and Electromagnet

October 28, 2018 Posted by Madhu

The key difference between bar magnet and electromagnet is that the bar magnet has a permanent magnetic field whereas the electromagnet has a temporary magnetic field.

 A magnet is a material that can produce a magnetic field. The magnetic field is invisible. But, it can produce a force that pulls on other ferromagnetic materials such as iron. Also, it can either attract or repel other magnets. Furthermore, there are two major types of magnets as permanent and temporary magnets. A bar magnet is a good example of a permanent magnet whereas an electromagnet is an example of a temporary one.

CONTENTS

1. Overview and Key Difference
2. What is a Bar Magnet
3. What is an Electromagnet
4. Side by Side Comparison – Bar Magnet vs Electromagnet in Tabular Form
5. Summary

What is a Bar Magnet?

A bar magnet is a permanent magnet that can create its own persistent magnetic field. The lines of the magnetic field of this magnet forms closed lines. Above all, the field direction is outward from the north pole and goes into the south pole of the magnet. Ferromagnetic materials can be used to make bar magnets.

Difference Between Bar Magnet and Electromagnet_Fig 01

Figure 01: A Bar Magnet

The magnetic field is strongest inside the magnet. When considering the external magnetic field, the strongest is near the poles. The north pole of one magnet can attract the south pole of another magnet. However, the north pole repels the north pole of another magnet and vice versa. We can easily trace out the magnetic field lines of these magnets using a compass. The needle of the compass rotates until it lines up with the magnetic field lines of the magnet.

What is an Electromagnet?

An electromagnet is a type of temporary magnet that can produce a magnetic field in the presence of an electric current. It is temporary because the magnetic field disappears when we turn off the electric current. Also, these magnets typically contain a wire wound to into a coil. Here, the current that passes through the wire creates a magnetic field.

Difference Between Bar Magnet and Electromagnet_Fig 02

Figure 02: An Electromagnet

And, this magnetic field is concentrated in the hole in the centre of the wound coil. Often, the coil is wound surrounding a magnetic core. Also, this magnetic core is a ferromagnetic material. Therefore, it can produce a strong magnetic field.

The main advantage of this type of magnets is that we can quickly change the magnetic field by controlling the electric current that passes through the wire. However, one disadvantage is that this needs a continuous power supply to maintain the magnetic field.

What is the Difference Between Bar Magnet and Electromagnet?

A bar magnet is a permanent magnet that can create its own persistent magnetic field whereas an electromagnet is a type of temporary magnet that can produce a magnetic field in the presence of an electric current. Therefore, the key difference between bar magnet and electromagnet is that bar magnet has a permanent magnetic field whereas electromagnets have a temporary magnetic field. Furthermore, we cannot change the magnetic field of a bar magnet quickly as we wish but with electromagnets, it is possible by controlling the electric current that passes through the wire. So, this also a difference between bar magnet and electromagnet. Moreover, we can use a bar magnet as it is but the electromagnets always need a power supply to create the magnetic field.

Further facts about the difference between bar magnet and electromagnet is shown in the below infographic.

Difference Between Bar Magnet and Electromagnet in Tabular Form

Summary – Bar Magnet vs Electromagnet

Both bar magnets and electromagnets are common types of magnets that can attract or repel things. The key difference between bar magnet and electromagnet is that the bar magnet has a permanent magnetic field whereas the electromagnet has a temporary magnetic field.

Reference:

1. “Bar Magnet.” Magnets and Electromagnets. Available here 
2. “Electromagnet.” Wikipedia, Wikimedia Foundation, 9 Oct. 2018. Available here 

Image Courtesy:

1.”MagnetEZ”By Eurico Zimbres FGEL/UERJ (CC BY-SA 2.0 br) via Commons Wikimedia  
2.”Simple electromagnet2″By Berserkerus at ru.wikipediaderivative work (Public Domain) via Commons Wikimedia

Related posts:

Key Difference Between Gas and PetrolDifference Between Gas and Petrol Difference Between Atmospheric Distillation and Vacuum DistillationDifference Between Atmospheric Distillation and Vacuum Distillation Difference Between Linoleum and MarmoleumDifference Between Linoleum and Marmoleum Difference Between Organic and Inorganic PhosphateDifference Between Organic and Inorganic Phosphate Difference Between Stalactites and StalagmitesDifference Between Stalactites and Stalagmites

Filed Under: Industrial Chemistry

About the Author: Madhu

Madhu is a graduate in Biological Sciences with BSc (Honours) Degree and currently persuing a Masters Degree in Industrial and Environmental Chemistry. With a mind rooted firmly to basic principals of chemistry and passion for ever evolving field of industrial chemistry, she is keenly interested to be a true companion for those who seek knowledge in the subject of chemistry.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Request Article

Featured Posts

Difference Between Coronavirus and Cold Symptoms

Difference Between Coronavirus and Cold Symptoms

Difference Between Coronavirus and SARS

Difference Between Coronavirus and SARS

Difference Between Coronavirus and Influenza

Difference Between Coronavirus and Influenza

Difference Between Coronavirus and Covid 19

Difference Between Coronavirus and Covid 19

You May Like

Difference Between Propane and Natural Gas

Difference Between Bullmastiff and French Mastiff

Difference Between Social Science and Natural Science

Difference Between Thermoplastic and Thermoset

Difference Between Thermoplastic and Thermoset

Difference Between Protonation and Ionization

Difference Between Protonation and Ionization

Latest Posts

  • What is the Difference Between Foundation and BB Cream
  • What is the Difference Between Cybrids and Hybrids
  • What is the Difference Between Hapten and Adjuvant
  • What is the Difference Between Omphalocele and Gastroschisis
  • What is the Difference Between Autonomic and Somatic Reflexes
  • What is the Difference Between Plagiocephaly and Craniosynostosis
  • Home
  • Vacancies
  • About
  • Request Article
  • Contact Us

Copyright © 2010-2018 Difference Between. All rights reserved. Terms of Use and Privacy Policy: Legal.