Which of the following wires would tend to have the least amount of electrical resistance? a) long b) fiberglass c) hot d) thick
thick wires have less resistance
Resistance = (Rho x L) / A Resistance = Resistivity (a number determining how well a material conducts electricity) x L (length) / A (Cross sectional area) That the material with the least resistivity, and the shortest length, with the largest cross sectional area, will have the least resistance..
Resistance is directly proportional to the length of the wire, so a long wire will not have the least resistance. Fiberglass is an insulator, not a conductor, so its resistivity will be off the chart a hot wire has more particles moving around and more stuff for free charge to bump in to. so its out. That leaves thick wire as the one that with all other factors equal, will have the lowest resistance.
