Magnetic Effects Of Current Question 159
Question: A circular coil of radius 4 cm and of 20 turns carries a current of 3 amperes. It is placed in a magnetic field of intensity of 0.5 $ weber/m^{2} $ . The magnetic dipole moment of the coil is [MP PMT 2001]
Options:
A) 0.15 $ ampere-m^{2} $
B) 0.3 $ ampere-m^{2} $
C) 0.45 $ ampere-m^{2} $
D) 0.6 $ ampere-m^{2} $
Show Answer
Answer:
Correct Answer: B
Solution:
$ M=NiA=20\times \frac{22}{7}{{(4\times {{10}^{-2}})}^{2}}3=0.3,A-m^{2} $
BETA
