The resistive element in a lightbulb is mea- . 1. 0.1584 mm sured to be 1.9 cm long with a resistance of 0.054 0. The element is made of tungsten ' 2. 0.056 mm which is known via prior measurements to have a resistivity of 5.6 x 10-8 0 . m. 3. 0.224 mm What is the diameter of this resistive ele- ment? 4. 0.0792 mm 5. 0.112 mm . O 6. 0.3168 mm