Magnetic field`B_(1)` due to abar magnet at a point P on axial line is equal to magnetic field `B_(2)` due to the same magnet at point Q on equatorial

Question

Magnetic field`B_(1)` due to abar magnet at a point P on axial line is equal to magnetic field `B_(2)` due to the same magnet at point Q on equatorial

Magnetic field`B_(1)` due to abar magnet at a point P on axial line is equal to magnetic field `B_(2)` due to the same magnet at point Q on equatorial line.What ios the ratio distances of point P and Q from centre?
A. `2^(-1//3)`
B. 2
C. `2^(1//3)`
D. `1//2`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
`B_("axis")=B_(eq)`
`(mu_(0))/(rpi)(2M)/(r_(a)^(3))=(mu_(0))/(4pi)(M)/(r_(e)^(3))`
`therefore (r_(a))/(r_(e))=3sqrt((2)/(1))=(1.26)/(1)`

4 views Answered 2023-02-05 15:29