We want to make a 0.180 mm diameter tungsten lament in a light bulb with a resistance of 0.184 .0. at 20.0C. What is the cross-sectional area of the lament wire? HINT: It's best to convert the diameter to meters before you calculate the area. :x ml How long should the filament be? The resistivity of tungsten at 200C is 5.60 x 10'8 .0. - m. Ex How is resistance related to the length and cross sectional area of the current carrying wire? m