3. The resistivity of a given material is 7.5 0 * m. It has a resistance of 3 Q and a cross -sectional 0.5 ma. What is the length of the material ? 4. Compute the resistivity of a given material with a resistance of 7.95 x10 . Q; area of cross - section and length are 0.02 m : and 1.5 m respectively ? What is the name of the conductor What I Have Learned Directions : Answer the question below. How can two different wires have the same resistance ? What I Can Do Now that you know what resistance is and the factors affecting it, evaluate whether resistance is good or bad in the situations below . 1. Resistance offered by the metal coil in a kettle 2. Resistance of the filament inside the incandescent bulb 3. Heating of wires of appliances because of resistance