In the diagram, resistors 2 and 3 are in parallel, and their combination is in series with resistor 1. Point A is in the wire between the voltage source and resistor 1. Point B is in the wire between resistor 1 and the combination 2 and 3. Point C is on the other side of resistor 2.
In the circuit shown, use the following:
R1 = 4 Ω,
R2 = 6 Ω,
R3 = 3 Ω,
ΔV = 36 V.
What is the current through resistor 1?