AP EAMCET201923 Apr 2019Morning ShiftPhysicsMagnetic Effects of CurrentActual
The resultant magnetic moment of three magnetic dipoles, each of the magnetic moment (M ) shown in the arrangement is
Options
- A( 2 M )
- B(( 2 +1) M )
- C(( 2 -1) M )
- D(M )
Correct answer
C. (( 2 -1) M )
Step-by-step solution
Three magnetic moments of magnetic dipole, are shown in the figure below as, Here, (M₁= M_A^2+M_B^2+2 M_A M_B 90^ ) ( aligned & M₁= M^2+M^2+0 & M₁=M 2 aligned ) Now, the resultant, magnetic moment, ( aligned & M_ resultant =M₁+M_C & ( M₁ and M_C . are & M_ resultant =M 2 +M & M_ resultant =(1+ 2 ) M aligned ) (( M₁ and M_C are in the same direction) ) ( ) correct option is (b).