Consider the circuit shown below, consisting of four resistors and two (ideal) R1= 9.0 ohm R7 = 12 ohm, R3 = 18 ohm, R4 = 6 ohm, V1 = 20V, V2= 12 V.
a. What is the current through resistor R4? (Hint: Can you do this with one loop equation?)
b. How much energy is lost through resistor R4 in 2.0 seconds?
c. Calculate the potential difference from point A to point C.
d. What is the current through R1? e. What is the current through R2? f. What is the current through R3?
(Hint: For parts d, e, and f, when using Kirchhoff?s rules, you should only need at most one junction equation and two loop equations).
