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
-
A.
1.8 x 10-7Ωm -
B.
5.5 x 10-7Ωm -
C.
1.8 x 10-7Ωm -
D.
5.8 x 107Ωm
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