JEE Main & Advanced Physics Electro Magnetic Induction Question Bank Static EMI

  • question_answer
    When the number of turns and the length of the solenoid are doubled keeping the area of cross-section same, the inductance                                          [CBSE PMT 1993; MH CET 2000]

    A)            Remains the same             

    B)            Is halved

    C)            Is doubled                             

    D)            Becomes four times

    Correct Answer: C

    Solution :

               \[L={{\mu }_{0}}\frac{{{N}^{2}}}{l}A\]. When N and l are doubled. L is also doubled.


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