A) zero
B) \[\frac{{{\mu }_{0}}{{i}^{2}}}{2\pi b}\]
C) \[\frac{{{\mu }_{0}}i}{2\pi b}\]
D) \[\frac{{{\mu }_{0}}i}{2\pi }\]
Correct Answer: B
Solution :
The force of attraction per unit length of the wire \[\frac{F}{l}=\frac{{{\mu }_{0}}}{4\pi }\frac{2il}{b}=\frac{{{\mu }_{0}}{{i}^{2}}}{2\pi b}\]You need to login to perform this action.
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