J & K CET Medical J & K - CET Medical Solved Paper-2014

  • question_answer
    A solenoid of length 0.6 m has a radius of 1 cm and is made up of 600 turns. It carries a current of 6 A. What is the magnitude of the magnetic field inside the solenoid?

    A)  \[7.54\times {{10}^{-3}}T\]

    B)  \[10.84\times {{10}^{-3}}T\]

    C)  \[4.87\times {{10}^{-3}}T\]

    D)  \[2.36\times {{10}^{-2}}T\]

    Correct Answer: A

    Solution :

     Given, \[l=0.6m\] \[y=1cm\] \[N=600\] \[i=6A\] \[\Rightarrow \] \[{{B}_{inside}}={{\mu }_{0}}ni\] \[=4\pi \times {{10}^{-7}}\times \frac{600}{0.6}\times 6\] \[=4\pi \times {{10}^{-7}}\times 36\times {{10}^{3}}\] \[=7.54\times {{10}^{-3}}T\]


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