\text { 3. Electrical engineers sometimes use a wire's conductance, } G=\sigma A / L \text {, instead of its resistance. }[10 a. Rewrite Ohm's law in terms of current, voltage difference, and conductance (not resistance).Show how you got your equation. [ 3 pts] b. What is the conductance of a 5.4-cm-long, 0.15-mm-diameter tungsten wire? (Table 27.2 in the textbook or the table linked here may be helpful) [ 4 pts ] c. A current of 0.70 amps flows through the wire of part B. What is the potential difference between the ends of the wire? [ 3 pts ]