A) \[4.5\times {{10}^{-8}}T\]
B) \[5.5\times {{10}^{-8}}T\]
C) \[5.0\times {{10}^{-8}}T\]
D) \[7.5\times {{10}^{-8}}T\]
Correct Answer: C
Solution :
(c) \[5.0\times {{10}^{-8}}T\] \[dB=\frac{{{\mu }_{0}}}{4\pi }\frac{Idl\,\sin \theta }{{{r}^{2}}}\] Here, \[dl=\Delta x=0.05\,m,l=10\,A,\,r=1m\] \[\sin \theta =\sin 90{}^\circ =1\] \[\therefore dB={{10}^{-7}}\times \frac{10\times 0.05\times 1}{{{(1)}^{2}}}\] \[=0.50\times {{10}^{-7}}=5.0\times {{10}^{-8}}T\]You need to login to perform this action.
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