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WAEC - Physics (1999 - No. 34)
A resistance wire of length 2 m and of uniform cross-sectional area 5.0 x 10
-7
m
2
has a resistance of 2.2 Ω Calculate its resistivity
1.8 x 10
-7
Ωm
5.5 x 10
-7
Ωm
1.8 x 10
-7
Ωm
5.8 x 10
7
Ωm
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