What is Electrical Resistivity? Electrical resistivity is a property of materials and is different from electrical resistance which is a property of a component. Resistivity is also known as Specific Electrical Resistance or Volume Resistivity. Resistivity can also be defined as the inverse of the conductivity of a material - Ï = 1 / Ï.It is a measure of how a material opposes the flow of electric current. The SI unit of resistivity is ohm meter (Î©.m). Resistivity, Ï (Greek letter rho), is defined as:
For about the same price as a train ticket, you can take a Greyhound bus from Miami to New York. The trip takes about 32 hours, and you can go direct or stop in a city such as Richmond, Virginia or Orlando, Florida. If you book 3 weeks or more in advance, you can get a one-way ticket for under $100.
Here's exactly how much the price of a New York City subway ride has changed over the last 100 years. On March 22, the price of a single New York City subway or bus ride increased from $2.50 to $2.75 per ride, reports CBS News. The New York Post points out that this is the fifth price increase in the past eight years. ABC News published a fare breakdown by the Associated Press listing every increase in the past 111 years, since the subway opened in 1904.