The resistance R can be calculated using the formula below Cross Section Area Length Resistivity, typical...
The resistance R of a wire of length l and uniform area of cross-section A is given by R = rhol/A, where rho is the resistivity of the wire. You melt the wire and recast it to have a new length l' = 10l (keeping the volume V = Al of the wire constant). What is the new resistance of the wire, if the original resistance of the wire was 100.0 Ohm.
"0000" gauge copper wire has a cross-sectional radius of 2.6cm. The resistivity of copper is 1.72 times 1-8ohmm. The circumference of the earth at the equator is 4.0 times 107m. What is the resistance of a piece of "0000"gauge wire that has been wrapped around the earth at the equator? 1200 ohm 840 ohm 320 ohm 0.032 ohm 0.084 ohm Select the following statement which is true about current flow. Select One of the Following: Current flows along lines of...
Six copper wires have the lengths and cross-sectional areas listed below. The resistance R of each segment can be calculated using, R = pL/ A Where p is the resistivity, L is the length of the wire, and A is the wire's cross-sectional area. Rank the resistances of the wires from lowest to highest.