The magnetic moment of a current-carrying circular coil of radius r varies as-
A. \(\frac { 1 }{{ r }^{2}}\)
B. \(\frac { 1 }{ r }\)
C. r
D. r2
Answer:D
The magnetic moment of a current-carrying circular coil of radius r varies as-
A. \(\frac { 1 }{{ r }^{2}}\) B. \(\frac { 1 }{ r }\) C. r D. r2