A) 9 . 6
B) 4 . 8
C) 3 . 2
D) 1 . 6
Correct Answer: C
Solution :
\[\frac{F}{l}=\frac{{{\mu }_{0}}}{4\pi }\frac{2{{i}_{a}}{{i}_{b}}}{r}\] \[\therefore \] \[0.144=\frac{{{10}^{-7}}\times 2\times 96\times 24}{r}\] \[\therefore \] \[r=\frac{{{10}^{-7}}\times 2\times 96\times 24}{0.144}\] \[=3.2\times {{10}^{-3}}m\] \[=3.2\,mm\]You need to login to perform this action.
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