a) Write an equation for the currents entering in/out of the top junction in Figure 1. Use I1 as the current coming from the left, I2 as the current going downward, and I3 as the current going to the right. b) You will need to draw two loops in order to solve this circuit. Write the corresponding voltage equations for these loops in terms of V, VA, VB, and VC; where VA, VB and VC are voltages across the resistors RA, RB and RC respectively. c) Using Ohm's law combined with the equations you found above

a) Find the equivalent resistance of the illustrated circuit. b) Using Ohm's law, determine the current and potential difference in each of the resistors. At the end, make a table with all the results. c) Determine the power dissipated by the 12 Ω resistor.

An electric circuit consisting of wires, batteries and resistors is shown. All currents have been labeled and assigned directions.   a.) Which statement is a correct expression of Kirchhoff's Junction Rule for currents with labels and directions assigned on the above figure?    I1 + I2 + I3 = 0       I1 - I2 + I3 = 0       None of these statements are correct.       I1 - I2 - I3 = 0       I1 + I2 - I3 = 0    b.) Which statement is a correct expression of Kirchhoff's Loop Rule for the sum of voltage changes for the large outer loop?     18.0 V - (80.0 Ω)I1 + 12.0 V + (50.0 Ω)I3 + (80.0 Ω)I3 = 0       18.0 V - (80.0 Ω)I1 - 12.0 V + (50.0 Ω)I3 + (80.0 Ω)I3 = 0       None of these statements are correct.       18.0 V - (80.0 Ω)I1 + 12.0 V - (50.0 Ω)I3 - (80.0 Ω)I3 = 0       -18.0 V - (80.0 Ω)I1 - 12.0 V + (50.0 Ω)I3 + (80.0 Ω)I3 = 0       18.0 V - (80.0 Ω)I1 - 12.0 V - (50.0 Ω)I3 - (80.0 Ω)I3 = 0