MHT CET202314 May 2023Morning ShiftPhysicsMagnetic Effects of CurrentActual
A straight wire carrying a current (I) is turned into a circular loop. If the magnitude of the magnetic moment associated with it is ' M ', then the length of the wire will be
Options
- AM 4 I
- B[ 4 I M ]^ 1 2
- C[ 4 M I ]^ 1 2
- D4 MI
Correct answer
C. [ 4 M I ]^ 1 2
Step-by-step solution
Magnetic moment is given as M = IA M = I ( R ^2 ) Now, length of the wire is, L=2 R aligned & R = L 2 & M = I ( L 2 )^2 & L = 4 M I aligned