A) \[\frac{{{\mu }_{0}}}{2}\ell n(3)\]
B) \[\frac{{{\mu }_{0}}}{2}\ell n(5)\]
C) \[{{\mu }_{0}}\ell n(3)\]
D) zero
Correct Answer: A
Solution :
The flux through loop \[Q=\frac{{{\mu }_{0}}i\ell }{2\pi }\ell n\left( \frac{b}{a} \right)\] The charge flow \[Q=\frac{-({{Q}_{f}}-{{Q}_{i}})}{R}=\frac{{{\mu }_{0}}i\ell }{R}\left[ \ell n\left( \frac{20}{10} \right)+\ell n\left( \frac{30}{20} \right) \right]\] \[=\frac{{{\mu }_{0}}i\ell }{R}[\ell n2-\ell n1+\ell n3-\ell n2]=\frac{{{\mu }_{0}}}{2}(\ell n3)\]You need to login to perform this action.
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