A) \[1.0\times {{10}^{-4}}Newton/amp-meter\]
B) \[4\times {{10}^{-2}}Newton/amp-metre\]
C) \[2\times {{10}^{-6}}Newton/amp-metre\]
D) \[6.64\times {{10}^{-8}}Newton/amp-metre\]
Correct Answer: C
Solution :
\[B=\frac{{{\mu }_{0}}}{4\pi }\frac{2M}{{{d}^{3}}}={{10}^{-7}}\times \frac{2\times 1.25}{{{\left( 0.5 \right)}^{3}}}=2\times {{10}^{-6}}N/A-m\]
You need to login to perform this action.
You will be redirected in
3 sec
