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JEE Main 22 July 2021 Shift 2 Solved Paper

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Question : 2

Total: 90

A Copper (Cu) rod of length 25cm and crosssectional area 3mm2 is joined with a similar Aluminium (Al) rod as shown in figure. Find the resistance of the combination between the ends A and B.
(Take Resistivity of Copper =1.7×10−8Ωm Resistivity of Aluminium =2.6×10−8Ωm )

[22 Jul 2021 Shift 2]

2.170 mΩ
1.420 mΩ
0.0858 mΩ
0.858 mΩ

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