JEE Mains 03-Sep-2020 Shift 1 Solved Paper

Section: Physics

Question : 2 of 75

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

Go to Question:

Prev Question

Next Question