Questions
Two metallic rods are connected in series. Both are of same material, of same length and same area of cross-section. If the conductivity of each rod be K, then what will be the conductivity of the combination ?
a
4 K
b
2 K
c
K
d
K/2
detailed solution
Correct option is C
Conductivity is the property of the material Thermal resistance Rs=R1+R2or 2l/K′A=l/KA+l/KAor K′=KTalk to our academic expert!
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