question_answer

Two identical short bar magnets each having magnetic moment M are placed at a distance of 2d with their axes perpendicular to each other in a horizontal plane. The magnetic induction at midpoint between them is:

A)  \[\frac{{{\mu }_{0}}}{4\pi }\sqrt{2}\frac{M}{{{d}^{3}}}\]                               

B)  \[\frac{{{\mu }_{0}}}{4\pi }\sqrt{3}\frac{M}{{{d}^{3}}}\]

C)  \[2\frac{{{\mu }_{0}}}{\pi }\frac{M}{{{d}^{3}}}\]                                              

D)  \[\frac{{{\mu }_{0}}}{4\pi }\sqrt{5}\frac{M}{{{d}^{3}}}\]