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Model a torch battery of length l to be made up of a thin cylindrical bar of radius 'a' and a concentric thin cylindrical shell of radius 'b' filled in between with an electrolyte of resistivity ρ (see figure). If the battery is connected to a resistance of value R, the maximum joule heating in R will take place for:

Option 1 -

R = (ρ / πl) ln(b/a)

Option 2 -

R = (ρ / 2πl)

Option 3 -

R = (ρ / 2πl) ln(b/a)

Option 4 -

R = (2ρ / πl) ln(b/a)

0 2 Views | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    a month ago
    Correct Option - 4


    Detailed Solution:
    Kindly go through the solution

     

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