1. The problem statement, all variables and given/known data You have a tungsten wire with a certain length and cross-sectional area. This wire has a resistance R. If you wanted to make a new wire with a SMALLER resistance, which of the following changes would accomplish that objective? True False use a piece of copper wire instead, with the same length and cross-sectional area True False increase the temperature of the wire True False use a thicker piece of tungsten wire, with the same length True False use a longer piece of tungsten wire, with the same cross-sectional area True False decrease the voltage between the ends of the wire 2. Relevant equations V=IR R=p(L/A) 3. The attempt at a solution My answers are in bold, atleast one of them is wrong, but i do not know which one, can anyone help out? Reason for answers: 1. Copper wire has a lower p so the R will be lower 2. Increasing Temp, increases the R 3. Increases A, which decreases R 4. Increases L which increases R 5. R=V/I so a lower V would mean a smaller R I cant figure out which answer is wrong, any help?