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WASSCE
An aluminium cable of diameter 4 × 10-3m and resistivity 3.0 × 10-4Ωm has a resistance of 21Ω. Calculate the length of the cable
(π = 3.14)
(π = 3.14)
A.
8.0 × 102m
B.
8.8 × 103m
C.
8.0 × 104m
D.
8.8 × 104m
Answer: B
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