Question

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: (c).2:5

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Q. 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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