View source for Electrical resistivity

''Electrical resistivity''' (also known as '''resistivity''', '''specific electrical resistance''', or '''volume resistivity''') is an intrinsic property that quantifies how strongly a given material opposes the flow of [[electric current]]. A low resistivity indicates a material that readily allows the flow of [[electric current]]. Resistivity is commonly represented by the [[Greek alphabet|Greek letter]] ρ ([[Rho (letter)|rho]]). The [[SI]] unit of electrical resistivity is the [[ohm]]⋅[[metre]] (Ω⋅m)<ref>{{cite book|author=Lowrie |title=Fundamentals of Geophysics |url=https://books.google.com/books?id=h2-NjUg4RtEC&pg=PA254 |publisher=Cambridge University Press |isbn=978-1-139-46595-3 |pages=254–}}</ref><ref>{{cite book|author=Narinder Kumar |title=Comprehensive Physics XII |url=https://books.google.com/books?id=IryMtwHHngIC&pg=PA282 |year=2003 |publisher=Laxmi Publications |isbn=978-81-7008-592-8 |pages=282–}}</ref><ref>{{cite book|author=Eric Bogatin |title=Signal Integrity: Simplified |url=https://books.google.com/books?id=_IiONSphoB4C&pg=PA114 |year=2004 |publisher=Prentice Hall Professional |isbn=978-0-13-066946-9 |pages=114–}}</ref> although other units like [[ohm]]⋅[[centimetre]] (Ω⋅cm) are also in use.  As an example, if a {{nowrap|1 m × 1 m × 1 m}} solid cube of material has sheet contacts on two opposite faces, and the resistance between these contacts is 1&nbsp;Ω, then the resistivity of the material is 1&nbsp;Ω⋅m.