Michael J. answered • 02/04/17

Effective High School STEM Tutor & CUNY Math Peer Leader

You know that the resistivity formula is

R = ρL / A

**where:**

R = resistance of the wire

ρ = resistivity of the wire

L = length of wire

A = cross-section area of wire

**Given:**

ρ = 2.06 Ω•km

A = 8.37 mm

^{2}But you won't have to actually use the formula. You just need to perform some conversions.

a)

Convert the given value resistivity to Ω•1000 ft

b)

Convert the given value of area to in

^{2}.Use the conversion factor

**1 in = (1/12) ft = 2.54 cm**

Danish K.

02/04/17