You successfully completed Circuits I and as an undergraduatework-

study, your past professor asked you to help her grade a Circuits I quiz.Onthe quiz, studentswere asked to find the power supplied by the source to both the 10 kV load (RL) and to the entire circuit as shown in Figure P3–60. Your professor asks to help her by creating a grading sheet.

(a) Solve he quiz and establish reasonable A, B . . . etc. cuts for incorrect solutions.

(b) A particular student correctly finds the Thevenin equivalent circuit that the resistive load sees and calculates the power to the load using VT 2 /RL. He then does a source transformation correctly finding the Norton equivalent of the circuit. He calculates the source power by VTIN. What grade would you give him?

(c) Another student finds PL¼5.625mWand PS¼22.5 mW, but provides no work to justify her answers. What grade would you give her?

(d) A third student first finds the Norton equivalent, finds the current through the load using a current divider and calculates the power in the load using IL 2 RL. He figures correctly what the parallel voltage would be across the Norton circuit and the load vL, and then calculates Ps=INvL.

What grade would you give him?

Transcribed Image Text:

15 V + 10 ww 10 RL 10 ww 10 10 FIGURE P3-60