2. Solved Papers
  3. Uttarakhand PMT

Uttarakhand PMT Uttarakhand PMT Solved Paper-2007

  • question_answer
    The deflection in a moving coil galvanometer is reduced to half when it is shunted with a coil of resistance S. The resistance of the galvanometer G = 40 \[\Omega .\] The value of Sis

    A)  80\[\Omega .\]          

    B)  40\[\Omega .\]

    C)  20\[\Omega .\]          

    D)  15\[\Omega .\]

    Correct Answer: B

    Solution :

     \[\alpha =\frac{S}{S+G}\alpha \] \[\therefore \] \[\frac{\alpha }{2}=\frac{S}{S+40}\alpha \] \[S+40=2S\] \[\therefore \] \[S=40\,\Omega \]


You need to login to perform this action.
You will be redirected in 3 sec spinner