resistance=resisitiveity*length/area
mass=density*length*area
area=mass/density*length
resistance=resistivity*length/(mass/density8lengty)
resistance=resititivey*length^2*density/mass
solve for length, then go back and solve for area. Yes, you have to look up resisitivey and density of copper.
A 15 ohm resistor is made from a copper wire of mass 14.2 grams. What is the wire's diameter and length?
1 answer
1 answer