Find the currents flowing in the circuit in Figure 21.25. Strategy This circuit is sufficiently complex that

Question:

Find the currents flowing in the circuit in Figure 21.25.

Strategy

This circuit is sufficiently complex that the currents cannot be found using Ohm's law and the series-parallel techniques-it is necessary to use Kirchhoff's rules. Currents have been labeled I1, I2, and I3 in the figure and assumptions have been made about their directions. Locations on the diagram have been labeled with letters a through h. In the solution we will apply the junction and loop rules, seeking three independent equations to allow us to solve for the three unknown currents.

R 2.5  a 12, 12 E = 18 V b C 1 13 E = 45 V E2 C R ww 6.0 92 + 0.592 g 12 www 0.5  d 13 12 e R3 1.592

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