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.

Calculate the ratio of the resistivity of 2 wires having the same leng

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