Current Electricity Part 2

Section: Physics

Question : 75 of 100

Marks: +1, -0

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:-

[3 Sep 2020 Shift 1]

R=
2ρ
πl
‌ln(
b
a
)
R=
ρ
πl
‌ln(
b
a
)
R=
ρ
2πl
(
b
a
)
R=
ρ
2πl
‌ln(
b
a
)

Validate

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