What is the resistance of a 3.5 m copper wire (Rho= 1.7x10-8 Ohm·m) that 1 point
has a cross-sectional area of 5.26x10-6 m2? Use the equation below. *
R=
pl
А
4.1 x 10-3 ohms
1.1 x 10 3 ohms
9.2 x 10-4 ohms
1.1x 10-2 ohms

Respuesta :

Answer:

(D)

Explanation:

Given :

l=3.5 m

[tex]A=5.26*10^{-6}[/tex] [tex]m^{2}[/tex]

[tex]p=1.7*10^{-8} ohm.m[/tex]

Resistance can be calculated as :

[tex]R=p\frac{l}{A} \\R=1.7*10^{-8} \frac{3.5}{5.26*10^{-6} }[/tex]

[tex]R=\frac{5.95*10^{-2} }{5.26} \\R=1.13*10^{-2}[/tex]

Resistance of the wire will be 1.1×[tex]10^{-2}[/tex] ohms

Option D is correct