Magnetic Effects Of Current Question 118
Question: The magnetic moment of a current (i) carrying circular coil of radius (r) and number of turns (n) varies as [AIIMS 2004]
Options:
A) 1/ r2
B) 1/ r
C) r
D) r2
Show Answer
Answer:
Correct Answer: D
Solution:
$ M=niA=ni( \pi r^{2} )\Rightarrow M\propto r^{2} $
BETA
