In the gure the resistances are R1 = 0.78 D and R2 = 1.6 Q, and the ideal batteries have emfs 1 = 2.1 V, and E2 = 83 = 3.7V. What are the [a] size and [bII direction (up or down} of the current in battery 1, the {c} size and {d} direction of the current in battery 2, and the {e} size and ( direction of the current in battery 3? {g} What is the potential difference Va Vb? {(1} up V [f] up V