Magnetic Effects Of Current Question 202
Question: A circular coil of diameter 7cm has 24 turns of wire carrying current of 0.75A. The magnetic moment of the coil is [AMU (Med.) 1999]
Options:
A) $ 6.9\times {{10}^{-2}}amp-m^{2} $
B) $ 2.3\times {{10}^{-2}}amp\text{-},m^{2} $
C) $ {{10}^{-2}}amp-m^{2} $
D) $ {{10}^{-3}}amp-m^{2} $
Show Answer
Answer:
Correct Answer: A
Solution:
$ M=NiA=24\times 0.75\times 3.14\times {{(3.5\times {{10}^{-2}})}^{2}} $ $ =6.9\times {{10}^{-2}}A\text{-},m^{2} $
BETA
