6V Use circuits (a) and (b) below to answer the following questions. Assume that both circuits are ade from identical resistors and batteries. R1 WW + R2 R J R2 R3 R3 (a) (b ) a. Explain why the total resistance in (a) is less than the total resistance of (b). Don't just state the rule; explain your answer in terms of pathways and current. b. Explain why voltage drop is constant in circuit (b) but not in circuit (a) in terms of potential energy, pathways and electrons. c. Explain why the current through circuit (a) stays constant but changes in each branch of circuit (b) d. Why does the current through a parallel circuit increase as more branches with resistors are added