A small bar magnet has a magnetic moment `1.2 A-m^(2)`. The magnetic field at a distance `0.1 m` on its axis will be: `(mu_(0)=4pixx10^(-7)T-m//A)`
A
`1.2xx10^(-4)T`
B
`2.4xx10^(-4) T`
C
`2.4xx10^(4) T`
D
`1.2xx10^(4)T`
Text Solution
Verified by Experts
The correct Answer is:
B
Topper's Solved these Questions
MAGNETISM
ERRORLESS |Exercise Magnet and it s Properties|15 Videos
MAGNETISM
ERRORLESS |Exercise Earth Magnetism|8 Videos
MAGNETIC EFFECT OF CURRENT
ERRORLESS |Exercise Exercise|394 Videos
RAY OPTICS
ERRORLESS |Exercise SET|25 Videos
Similar Questions
Explore conceptually related problems
A short bar magnet has a length 2l and a magnetic moment 10 Am^(2) . Find the magnetic field at a distance of z = 0.1m from its centre on the axial line. Here , l is negligible as comppared to z
A bar magnet 20 cm in length has a magnetic moment of 1 Am^2 . Calculate the magnetic field at a distance: (i) 0.5 m from its centre at a point on its axial line (ii) 0.6 m from its centre at a point on its equatorial line
A small magnet of magnetic moment pixx10^(-3) Am^(2) is placed on the Y-axis at a distance of 0.1 from the origin with its axis parallel to the X-axix. A coil have 169 turns and radius 0.05 m is placed on the X-axis at a distance of 0.12 m from the origin with the axis of the coil coinciding with the X-axis. Find the magnitude and direction of the current in the coil for a compass needle placed at the origin, to point in the north-south direction.
Magnetic potential at a point due to a short magnetic dipole of moment 2 Am^(2) at a distance of 100 cm along a line making an angle of 60^(@) with the axis is (mu_(0)=4pixx10^(-7)Wb//Am)
A long solenoid has 200 turns per cm and carries a current of 2.5 amps. The magnetic field at its centre is (mu_(0)=4pixx10^(-7)"weber"//amp-m)
The pole strength of 12 cm long bar magnet is 20 A m. The magnetic induction at a point 10 cm away from the centre of the magnet on its axial line is [(mu_(0))/(4pi)=10^(-7)"H m"^(-1)]
A bar magnet has geometric length 4.8 xx 10^(-2)m . The magnet moment of bar magnet, of pole strength 20A m is?
What is the magnetic induction due to a short bar magnet of moment of 0.5 Am^(2) at a point along its axis at a distance of 20 cm from the centre of the magnet? (mu_(0)/(4pi)=10^(-7)" SI unit")
