Calculate the ratio of the resistivity of 2 wires having the same length and same resistance with area of cross section 2m2 and 5m2 respectively.

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1.	Calculate the ratio of the resistivity of 2 wires having the same length and same resistance with area of cross section 2m2 and 5m2 respectively.
A.	5:7
B.	2:7
C.	2:5
D.	7:5
Answer» D. 7:5

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