Discussion Forum
Que.  The thermal resistance for heat conduction through a spherical wall is 
a.  (r₂r₁)/2πkr₁r₂ 
b.  (r₂r₁)/3πkr₁r₂ 
c.  (r₂r₁)/πkr₁r₂ 
d.  (r₂r₁)/4πkr₁r₂ 
Correct Answer:(r₂r₁)/4πkr₁r₂

Que.  The thermal resistance for heat conduction through a spherical wall is 
a.  (r₂r₁)/2πkr₁r₂ 
b.  (r₂r₁)/3πkr₁r₂ 
c.  (r₂r₁)/πkr₁r₂ 
d.  (r₂r₁)/4πkr₁r₂ 
Correct Answer:(r₂r₁)/4πkr₁r₂
