Magnetic Effects Of Current Question 70
Question: Magnetic field due to 0.1 A current flowing through a circular coil of radius 0.1 m and 1000 turns at the centre of the coil is [CBSE PMT 1999]
Options:
A) $ 2\times {{10}^{-1}},T $
B) $ 4.31\times {{10}^{-2}},T $
C) $ 6.28\times {{10}^{-4}},T $
D) $ 9.81\times {{10}^{-4}},T $
Show Answer
Answer:
Correct Answer: C
Solution:
$ B=\frac{{\mu_{0}}Ni}{2r}=\frac{4\pi \times {{10}^{-7}}\times 1000\times 0.1}{2\times 0.1}=6.28\times {{10}^{-4}},T $
BETA
