PO
14: A short Magnetic dipole has magnetic moment 1 Am2. Calculate its magnetic field at
a distance of 10 cm from the centre of magnetic dipole on the axis.
Answers
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2
Answer:
M=1 Am
2
r=10 cm
magnetic induction at the axis
B
axis
=
4π
μo
r
3
M
.
1+3 cos
2
(30
o
)
=
4π
4π×10
−7
(
(0.10)
3
1
)(
2
13
)
=10
−7
(
(0.1)
3
1
)
2
13
B
axis
=5
13
×10
−5
wb/m
2
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