Two electrical Problems I'm stuck on

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SUMMARY

The discussion focuses on solving two electrical circuit problems, specifically problems 18 and 24 from a physics assignment. For problem 18, the key steps involve calculating the Thevenin equivalent voltage (Vth) using the formula Vth = Rthv * i_sc, and determining the equivalent resistance by appropriately handling voltage and current sources. Problem 24 requires the application of nodal analysis to express Vnodal in terms of V3. These methods are essential for analyzing complex circuits effectively.

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  • Understanding of Thevenin's theorem and equivalent circuits
  • Knowledge of nodal analysis in circuit theory
  • Familiarity with circuit components such as voltage and current sources
  • Ability to interpret circuit diagrams and analyze electrical circuits
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Electrical engineering students, circuit designers, and anyone looking to enhance their skills in circuit analysis and problem-solving techniques.

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hey guys, I'm not sure how to start these off. Can someone give me a hint?


I'm not sure how else to show these (they have circuit pictures). The questions are numbers 18 & 24 here http://www.physics.brocku.ca/Courses/2P31/DH-Asst1.pdf .

thanks in advance :)
 
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For 18... you know that Vth = Rthv * i_sc. If you remove V, find the equivalent resistance (what do you do with voltage sources? current sources? open or short which one?). Also find the open circuit voltage across your terminals with V2 removed. I'm pretty sure this is what you would do.
 
For 24, use nodal analysis. That'll give you an expression of Vnodal as a function of V3.
 

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