Home
Class 12
PHYSICS
The intensity of magnetsation of a bar m...

The intensity of magnetsation of a bar magnet is `5.0xx10^(4)A.m^(-1)` The magnetic length and area of cross section of the magnet are 12cm and `1 "cm"^(2)` Respectively. The magnitude of magnetic moment of this this bar magnet is (in SI unit)

A

`0.6`

B

`1.3`

C

`1.24`

D

`2.4`

Text Solution

Verified by Experts

The correct Answer is:
A
Volume of the bar magnet,
`V=0.12xx1xx10^(-4)=1.2xx10^(-5)m^(3)`
Intensity of magnetisation ,
`M=(p_(m))/(V) " " [p_(m)` = magnetic moment ]
`therefore" " p_(m)=MV=5.0xx10^(4)xx1.2xx10^(-5)=0.6A.m^(2)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • Magnetic Properties of Materials

    CHHAYA PUBLICATION|Exercise EXAMINTION ARCHIVE (JEE Main)|3 Videos

  • Magnetic Properties of Materials

    CHHAYA PUBLICATION|Exercise EXAMINTION ARCHIVE (AIPMT)|1 Videos

  • Magnetic Properties of Materials

    CHHAYA PUBLICATION|Exercise EXAMINTION ARCHIVE (WBCHSE)|16 Videos

  • LIGHT WAVE AND INTERFERENCE OF LIGHT

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|15 Videos

  • OPTICAL INSTRUMENTS

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|8 Videos

Similar Questions

Explore conceptually related problems

The intensity of magnetization of a bar magnet is 5.0 xx 10^4 A m^(-1) . The magnetic length and the area of cross section of the magnet are 12 cm and 1 cm^2 respectively. The magnitude of magnetic moment of this bar magnet is (in Si unit)

magnetic moment of a small bar magnet is 1A.m^(2) What will be the magnetic field at a point 1 m away from the centre of the magnet along its length?

Knowledge Check

  • The torque acting on a bar magnet of magnetic moment M in a uniform magnetic field B will be

    A
    `MBsintheta`
    B
    `MB//sintheta`
    C
    `MBcostheta`
    D
    `MB//costheta`

  • A short bar magnet placed with its axis at 30^@ with a uniform external magnetic field of 0.16T experiences a torque of magnitude 0.032J the magnetic moment of the bar magnet will be

    A
    0.23J/T
    B
    0.4J/T
    C
    0.08J/T
    D
    zero

    • Similar Questions

    Explore conceptually related problems

    Magnetic moment of a small bar magnet is 2A.m^(2) Determine the magnetic field at a point 10 cm from the centre of the magnet on its perpendicular bisector.

    If the magnetic moment of a bar magnet of length 5 cm be 1A.m^(2) , what is the strength of each pole ?

    The ratio of the magnetic fields at distances 30 cm and 60 cm respectively from the center of a bar magnet is 25 : 2 . Determine the length of the magnet .

    The length of a bar magnet is 20 cm and its magnetic moment is 0.6 A m^(2) . Determine the magnetic field at a point on the axis of the magnet and 30 cm away from the north pole .

    The susceptibility of a magnetic material is 1.9xx10^(-5) . Name the type of magnetic material it represents.

    Magnetic moments of two small magnets are 0.108A.m^(2) and 0.192A.m^(2) . The magnets are placed perpendicular to each other on a horizontal plane . They are at distances of 30 cm and 40 cm , respectively , from the junction point of their axes . Determine the magnitude and direction of the resultant magnetic field at this junction point .

    Home
    Profile