Magnetic Effects Of Current Question 95
Question: 1A current flows through an infinitely long straight wire. The magnetic field produced at a point 1 metres away from it is [MP PMT 2001]
Options:
A) $ 2\times {{10}^{-3}},Tesla $
B) $ \frac{2}{10},Tesla $
C) $ 2\times {{10}^{-7}},Tesla $
D) $ 2\pi \times {{10}^{-6}},\text{Tesla} $
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Answer:
Correct Answer: C
Solution:
$ B={{10}^{-7}}\times \frac{2i}{r}={{10}^{-7}}\times \frac{2\times 1}{1}=2\times {{10}^{-7}},T $
BETA
