A) \[2\pi \times {{10}^{-3}}\,Tesla\]
B) \[2\pi \times {{10}^{-5}}\,Tesla\]
C) \[4\pi \times {{10}^{-3}}\,Tesla\]
D) \[2\pi \times {{10}^{-5}}\,Tesla\]
Correct Answer: A
Solution :
Number of turns per unit length, \[n=10\] turns/cm \[={{10}^{3}}\] turns/m Inside the solenoid, magnetic induction \[B={{\mu }_{0}}ni=(4\pi \times {{10}^{-7}})\times {{10}^{3}}\times 5\] \[=\mathbf{2\pi \times 1}{{\mathbf{0}}^{-\mathbf{3}}}\]Tesla
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