Questions
What is the magnetic field induction (of earth) when a bar magnet is placed with its axial line perpendicular to magnetic meridian with North pole facing towards east to achieve neutral point?
detailed solution
Correct option is B
In this case two null points are obtained one N1 is in (N-W direction ) and another N2(S-E direction)We know magnetic field induction at any point isBH=μ04πMd31+3cos2θHere tanθ=2∵cosθ=13 BH=μ04π2Md3 Hence key (2) is Correct & Remaining (1),(2),(4) are not correctTalk to our academic expert!
Similar Questions
Two short magnets of magnetic moments 0.8 and 2.7 are placed along the same straight line with their like poles towards each other. The distance between their centers is 40cm. The distance of the neutral point on their common axial line from the center of the stronger magnet is
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