Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Four rods of same material are taken. The length l and radius of cross-section r are given below. In which rod the heat flow will be maximum when temperature difference across the ends of rods is same under steady state? - Sarthaks eConnect

Four rods of same material are taken. The length l and radius of cross-section r are given below. In which rod the heat flow will be maximum when temperature difference across the ends of rods is same under steady state?

Four rods of same material are taken. The length l and radius of cross-section r are given below. In which rod the heat flow will be maximum when temperature difference across the ends of rods is same under steady state?

A.

l=50 cm, r=0.5 cm

B.

l=100 cm, r=1.0 cm

C.

l=75 cm, r=1.5 cm

D.

l=100 cm, r=2 cm

Solution

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Best answer

Heat flow will be maximum when resistance will be minimum

`R=l/(KA)`