Magnetic Effects Of Current Question 83
Question: A long straight wire carries an electric current of 2A. The magnetic induction at a perpendicular distance of 5m from the wire is [EAMCET (Med.) 2000]
Options:
A) $ 4\times {{10}^{-8}}T $
B) $ 8\times {{10}^{-8}}T $
C) $ 12\times {{10}^{-8}}T $
D) $ 16\times {{10}^{-8}}T $
Show Answer
Answer:
Correct Answer: B
Solution:
$ B={{10}^{-7}}\frac{2i}{r}={{10}^{-7}}\times \frac{2\times 2}{5}=8\times {{10}^{-8}},T $
BETA
