1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# Two short bar magnets have magnetic moments 1.20A m2 and 1.00A m2 respectively. They are placed on horizontal table parallel to each other with their north poles pointing towards the south. They have a common magnetic equator and are separated by a distance 20.0cm. The value of the resultant horizontal magnetic induction at the mid-point O of the line joining their centers is : (horizontal component of the Earth's magnetic induction is 3.6×10−5Wb/m2).

A
3.60×105Wb/m2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
2.56×104Wb/m2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
3.50×104Wb/m2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
5.80×104Wb/m2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

## The correct option is B 2.56×10−4Wb/m2B1=μo4πM1(d1+l2)3/2B2=μo4πM2(d1+l2)3/2B1=10−7×1.2(0.12+(0.505)2)3/2=1.1955×10−4wb/㎡B2=10−7×1(0.12+(0.505)2)3/2=0.9963×10−4BE=EarthmagneticfieldBE=0.36×10−4wb/m2B1+B2+BE=2.5518×10−4wb/m2

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Ampere's Law
PHYSICS
Watch in App
Explore more
Join BYJU'S Learning Program