Problem 21.12 A silver wire is 5.2 m long and 0.52 mm in diameter. Part A...

Question

Question

Problem 21.12

A silver wire is 5.2 m long and 0.52 mm in diameter.

Part A

What is its resistance?

Express your answer using two significant figures.

R =

Ω

Answer 1

Answer #1

resistivity of silver=1.59*10^(-8) ohm.m

resistance=resistivity*length/area

area=pi*(diameter/2)^2=2.1237*10^(-7) m^2

then resistance=1.59*10^(-8)*5.2/(2.1237*10^(-7))=0.38932 ohms

Answer 2

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