Induction, Physics


The property of magnetism may be induced in a piece of material that does not normally have that characteristic.

If a piece of soft iron is placed in the magnetic field of a permanent magnet, the soft iron will assume the properties of a magnet and become magnetised. This action is called magnetic induction. It occurs because the lines of flux tend to flow through the path of least opposition, and air offers more opposition than soft iron.


When the lines of flux pass through the soft iron, the molecules of soft iron line up with the lines of force, their north poles pointing in the direction in which the lines of force are travelling through the iron. The end at which the lines of flux enter the soft iron becomes a south pole, the end at which they leave, a north pole.

If the magnetic field is removed, the soft iron will loose its magnetism.

It should be noted that a piece of soft iron sitting in the earth's magnetic field will concentrate the lines of flux and become magnetised.


Posted Date: 9/13/2012 5:35:35 AM | Location : United States

Related Discussions:- Induction, Assignment Help, Ask Question on Induction, Get Answer, Expert's Help, Induction Discussions

Write discussion on Induction
Your posts are moderated
Related Questions
Define the use of quartz crystal method to detect ultrasonic waves. Quartz crystal method: This method is based onto the principle of Piezo-electric effect. While one pair o

(a) A 400mm length of conductor carrying a current of 25A is situated at right-angles to a magnetic field among two poles of an electric motor. The poles have a circular cross

Determine about the rod in magnetic coil the rod is placed in a magnetic coil deliver alternating current, the rod suffers a change within length for each half cycle of alterna

Q. Illustrates the evidence is there supporting the Big Bang theory? Answer:- In brief the universe is expanding. Each of the galaxies we have observed that are utmost awa

How do objects move in one dimension?

reprint figure

How is radiation emitted from the body? The body radiates energy by thermal conduction by the skin to the air, clothes, etc, around the body. A small amount of energy would als

ROTOR:  (i) squirrel -cage rotor (ii) phase-wound or wound-rotor 90% of Induction Motor are squirrel cage type due to this type of rotor has a easiest and the most rugged

Q. What are leptons? Give examples. Leptons: Leptons are lighter particles having mass equal to or less than about 207 times the mass of an electron except neutrino an