A) 2.5 G
B) 5 G
C) 20 G
D) 40 G
Correct Answer: B
Solution :
\[B=\frac{{{\mu }_{0}}I}{2\pi r}\] \[\Rightarrow \] \[B\propto \frac{1}{r}\,\,\,\Rightarrow \,\,\,\frac{{{B}_{1}}}{{{B}_{2}}}=\frac{{{r}_{2}}}{{{r}_{1}}}\] \[\Rightarrow \] \[\frac{10}{{{B}_{2}}}=\frac{10}{5}\] \[\Rightarrow \] \[{{B}_{2}}=5\,G\]You need to login to perform this action.
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