A) proportional to z
B) proportional to a2
C) proportional to \[\frac{1}{a}\]
D) equal to zero
Correct Answer: D
Solution :
From Biot Savarts law, magnetic field at point R due to a straight wire \[B=\frac{{{\mu }_{0}}}{4\pi }\frac{i\Delta l\sin \theta }{{{r}^{2}}}\] but \[\theta =0\] \[\therefore \] \[B=0\]You need to login to perform this action.
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