Home
Class 12
PHYSICS
The magnetic moment of a length 10 cm an...

The magnetic moment of a length 10 cm and pole strength 4.0 Am will be

A

`0.4 Am^(2)`

B

`1.6 Am^(2)`

C

`20 Am^(2)`

D

`8.0 Am^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`M=mL=4xx10xx10^(-2)=0.4Axxm^(2)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MAGNETISM AND MATTER

    A2Z|Exercise Magnetic Equipments|58 Videos

  • MAGNETISM AND MATTER

    A2Z|Exercise Magnetic Materials|50 Videos

  • GEOMETRICAL OPTICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • MOCK TEST

    A2Z|Exercise Mock Test 3|44 Videos

Similar Questions

Explore conceptually related problems

The magnetic moment of bar magnet of length ' "2l and pole strength 'm' is

A magnetic dipole of lrngth 10 cm has pole strength of 20 Am apart . Find the magnetic moment of the dipole

Knowledge Check

  • The magnetic dipole moment of a bar magnet of geometric length 6 cm and pole strength 100 Am is

    A
    `2.5 Am^(2)`
    B
    `10 Am^(2)`
    C
    `5 Am^(2)`
    D
    `7.5 Am^(2)`

  • The magnetic dipole moment of a bar magnet of geometric length 6 cm and pole strength 100 Am is

    A
    `2.5 Am^(2)`
    B
    `10 Am^(2)`
    C
    `5 Am^(2)`
    D
    `7.5 Am^(2)`

  • A magnet of length 10 cm and pole strength 4xx10^(-4)Am is placed in a manetic field of induction 2xx10^(-5)weber m^(-2) , such that the axis of the magnet makes an angel 30^(0) with the lines of induction. The moment of the couple acting on the magnet is

    A
    `4xx10^(-10)Nm`
    B
    `8xx10^(-10)Nm`
    C
    `4xx10^(-6)Nm`
    D
    `sqrt3xx10^(-11)Nm`

    • Similar Questions

    Explore conceptually related problems

    Two magnets of length 10 cm each and pole strength 100 Am each are placed together such that separation between their south poles is 15 cm and that between their north poles is 35 cm. Calculate the force acting between the two magnets.

    A long, vertical magnet is placed at a perpendicular distance of 0.8m from the centre of a horizontal magnetic needle of length 0.12 m ad pole strength 0.6Am. If the moment of the couple acting upon the needle is 72 xx 10^(-7)Nm , Find the pole strength of the long magnet. [Hint: Since the magnet is long, the effect of the distance pole may be neglected.]

    The force experienced by a pole of strength 100 Am at a distance of 0.2 m from a short magnet of length 5 cm and pole strength of 200 Am on its axial line will be

    A magnet of length 0.1 m and pole strength 10(-4) Am is kept in a magnetic field of 30 Wb"/"m^(2) at an angle of 30^(@) The couple acting on it is ... xx 10^(-4) Nm

    A magnet of length 0.1 m and pole strength 10^(-4) A.m. is kept in a magnetic field of 30 Wb//m^(2) at an angle 30^(@) . The couple acting on it is …xx10^(-4)Nm .

    Home
    Profile