Advertisements
Advertisements
Question
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.
Options
all the domains get oriented in the direction of magnetic field.
all the domains get oriented in the direction opposite to the direction of magnetic field.
domains get oriented randomly.
domains are not affected by magnetic field.
Advertisements
Solution
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase all the domains get oriented in the direction of magnetic field.
Explanation:
Ferromagnetic solids can be permanently magnetised and then all the domains get oriented in the direction of applied magnetic field.
APPEARS IN
RELATED QUESTIONS
What is ferromagnetism?
What type of magnetism is shown in the following alignment of magnetic moments?
Analysis shows that nickel oxide has the formula Ni0.98O1.00. What fractions of nickel exist as Ni2+ and Ni3+ ions?
Explain the following with suitable examples:
Ferrimagnetism
Explain the following with suitable examples:
Antiferromagnetism
Explain why:
(i) Transition elements form coloured compounds.
(ii) Interhalogen compounds are more reactive than their constituent elements.
(iii) Cu+ is diamagnetic but Cu2+ is paramagnetic. (Z = 29)
The BH curve for a ferromagnetic material is shown in the figure. The material is placed inside a long solenoid which contains 1000 turns/cm. The current that should be passed in the solenonid to demagnetize the ferromagnet completely is
What is magnetic susceptibility?
Example of ferromagnetic substance is ____________.
Substances which are weakly repelled in magnetic field are known as ____________.
Which of the following arrangements shows schematic alignment of magnetic moments of antiferromagnetic substances?
Which one of the following would feel attraction when placed in magnetic field: Co2+, Ag+, Ti4+, Zn2+
Some of the polar crystals when heated produces small electrical current. This phenomenon is called ______.
Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion: Magnetic moment values of actinides are lesser than the theoretically predicted values.
Reason: Actinide elements are strongly paramagnetic.
Select the most appropriate answer from the options given below:
Magnetic materials used for making permanent magnets (P) and magnets in a transformer (T) have different properties of the following, which property best matches for the type of magnet required ?
The susceptibility of a paramagnetic material is 99. The permeability of the material in Wb/A-m is ______.
[permeability of the free space μ0 = 4π × 10-7 Wb/A - m]
Among the following ions, which one has the highest paramagnetism?
Give a reason for the following:
Cu+2 salts are paramagnetic, while Cu+ salts are diamagnetic.
The metal complex ion that is paramagnetic is ______.
(Atomic number of Fe = 26, Cu = 29, Co = 27 and Ni = 28)
The calculated spin only magnetic moment of Cr2+ ion is ______.
