A triangular array of resistors is shown in Fig. What current will this array draw from a

Question:

A triangular array of resistors is shown in Fig. What current will this array draw from a 35.0-V battery having negligible internal resistance if we connect it across?
(a) ab;
(b) bc;
(c) ac?
(d) If the battery has an internal resistance of 3.00 Ω, what current will the array draw if the battery is connected across be?