Discussion Forum
Que.  A stainless steel tube with inner diameter₁2 mm, thickness 0.2 mm and length 50n cm is heated electrically. The entire 15 k W of heat energy generated in the tube is transferred through its outer surface. Find the intensity of current flow 
a.  52 amps 
b.  62 amps 
c.  72 amps 
d.  82 amps 
Correct Answer:52 amps
