A) 1.6 T
B) 6.8 T
C) 0.2 T
D) 0.1 T
Correct Answer: C
Solution :
Magnetic field \[B=\frac{{{\mu }_{0}}i}{2\pi d}\] (due to a long wire) \[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,B\propto \frac{1}{d}\] So, if d is doubled, the magnetic field becomes halved \[\therefore \,\,\,\, Magnetic field =0.2 T\]You need to login to perform this action.
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