Problem 3 (18 points). In the circuit below, all of the resistors are identical and have resistance R = 2.20. The batteries all have emf & = 3 V. B A (a) (6 points) Find the current that flows in this circuit. (You theat the ercuit as a single loop, since no current will flow in the open wires at the bottom.) (b) (6 points) Find the voltage VB-VA from point A to point B shown on the circuit diagram. (c) (6 points) Now suppose an additional ideal wire is added connecting A and B directly, as shown below. Use the loop and junction rules to find the current that flows in the wire connecting A and B