A) \[6.024\times {{10}^{-3}}T\]
B) \[8.024\times {{10}^{-3}}T\]
C) \[5.024\times {{10}^{-3}}T\]
D) \[7.024\times {{10}^{-3}}T\]
Correct Answer: C
Solution :
(c) \[5.024\times {{10}^{-3}}T\] Here, \[n=\frac{600}{0.6}=1000\,\,turns/m,\,l=4\,A\] \[l=0.6\,m,\,r=0.02\,m\because \frac{l}{r}=30\,i.e.,\,l>>r\] Hence, we can use long solenoid formula, then \[\therefore \,\,\,\,\,B={{\mu }_{0}}nl=4\pi \times {{10}^{-7}}\times {{10}^{3}}\times 4=50.24\times {{10}^{-4}}\] \[=5.024\times {{10}^{-3}}T\].You need to login to perform this action.
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