WAEC - Physics (1999 - No. 34)

A resistance wire of length 2 m and of uniform cross-sectional area 5.0 x 10-7 m2 has a resistance of 2.2 Ω Calculate its resistivity
1.8 x 10-7Ωm
5.5 x 10-7Ωm
1.8 x 10-7Ωm
5.8 x 107Ωm

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