Answer
Verified
367.2k+ views
Hint: Hysteresis is characterized as a lag of magnetization intensity ($B$) behind the magnetic field intensity ($H$). For a ferromagnetic substance, When ferromagnetic materials are placed inside a current-carrying coil the magnetizing field $H$ caused by the current forces some or all the atomic magnetic dipoles in the material to align with the external magnetizing field, in this way material gets magnetized.
Complete Step by Step Solution: Hysteresis occurs in a system that involves a magnetic field. Hysteresis is the common property of ferromagnetic substances. Generally, when the magnetization of ferromagnetic materials lags behind the magnetic field this effect can be described as the hysteresis effect. It relates to the magnetisation properties of a material by which it firstly becomes magnetised and then demagnetised.
The meaning of hysteresis is “lagging”.
All ferromagnetic materials exhibit the phenomena of hysteresis.
The Magnetic Hysteresis loop above, shows the behaviour of a ferromagnetic core graphically as the relationship between $B$ and $H$ is non-linear.
Starting with an unmagnetized core both $B$ and $H$ will be at zero, point 0 on the magnetisation curve. The $B - H$ curve follows the path as shown, as the magnetising current flowing through the coil alternates between a positive and negative value such as the cycle of an AC voltage. This path is called a Magnetic Hysteresis Loop.
Note: The effect of magnetic hysteresis shows that the magnetisation process of a ferromagnetic core and therefore the flux density depends on which part of the curve the ferromagnetic core is magnetised on as this depends upon the circuits past history giving the core a form of “memory”. Then ferromagnetic materials have memory because they remain magnetised after the external magnetic field has been removed.
However, soft ferromagnetic materials such as iron or silicon steel have very narrow magnetic hysteresis loops resulting in very small amounts of residual magnetism making them ideal for use in relays, solenoids and transformers as they can be easily magnetised and demagnetised.
Complete Step by Step Solution: Hysteresis occurs in a system that involves a magnetic field. Hysteresis is the common property of ferromagnetic substances. Generally, when the magnetization of ferromagnetic materials lags behind the magnetic field this effect can be described as the hysteresis effect. It relates to the magnetisation properties of a material by which it firstly becomes magnetised and then demagnetised.
The meaning of hysteresis is “lagging”.
All ferromagnetic materials exhibit the phenomena of hysteresis.
The Magnetic Hysteresis loop above, shows the behaviour of a ferromagnetic core graphically as the relationship between $B$ and $H$ is non-linear.
Starting with an unmagnetized core both $B$ and $H$ will be at zero, point 0 on the magnetisation curve. The $B - H$ curve follows the path as shown, as the magnetising current flowing through the coil alternates between a positive and negative value such as the cycle of an AC voltage. This path is called a Magnetic Hysteresis Loop.
Note: The effect of magnetic hysteresis shows that the magnetisation process of a ferromagnetic core and therefore the flux density depends on which part of the curve the ferromagnetic core is magnetised on as this depends upon the circuits past history giving the core a form of “memory”. Then ferromagnetic materials have memory because they remain magnetised after the external magnetic field has been removed.
However, soft ferromagnetic materials such as iron or silicon steel have very narrow magnetic hysteresis loops resulting in very small amounts of residual magnetism making them ideal for use in relays, solenoids and transformers as they can be easily magnetised and demagnetised.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Assertion The resistivity of a semiconductor increases class 13 physics CBSE
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
The branch of science which deals with nature and natural class 10 physics CBSE
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Difference Between Plant Cell and Animal Cell
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Fill the blanks with proper collective nouns 1 A of class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
Write an application to the principal requesting five class 10 english CBSE
a Tabulate the differences in the characteristics of class 12 chemistry CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE