2. Solved Papers
  3. Chhattisgarh PMT

Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2005

  • question_answer
    The voltage V and current \[I\] graph for s conductor at two different temperatures \[{{T}_{1}}\] and \[{{T}_{2}}\] are shown in the figure. The relation between \[{{T}_{1}}\] and \[{{T}_{2}}\] is

    A) \[{{T}_{1}}>{{T}_{2}}\]                                  

    B) \[{{T}_{1}}\approx {{T}_{2}}\]

    C) \[{{T}_{1}}={{T}_{2}}\]                                  

    D) \[{{T}_{1}}<{{T}_{2}}\]

    Correct Answer: A

    Solution :

    By Ohm's law, \[V=IR\] Comparing with \[y=mx,\]\[m=R\] So, the slope of the curve will give resistance. \[\therefore \] From the graph                 \[{{m}_{1}}>{{m}_{2}}\] or            \[{{R}_{1}}>{{R}_{2}}\] \[\Rightarrow \]               \[{{T}_{1}}>{{T}_{2}}\]


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