How to find Uab and Ucd in this circuit

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To find Uab and Ucd in the given circuit, it is essential to determine the potential drop across the resistor R1, which can be calculated using the formula Uab = R * I. The circuit requires simplification, particularly noting that resistors R3 and R5 are in parallel. There is confusion regarding the meaning of a wire marked in red, which needs clarification. Additionally, the absence of voltage or current sources suggests that Uab may represent the equivalent resistance between nodes a and b. Understanding these elements is crucial for solving the problem effectively.
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Homework Statement


How to find Uab and Ucd in this circuit
http://img830.imageshack.us/img830/2852/556d.png

Homework Equations



The Attempt at a Solution


I have no idea how to find it.
I think that Uab=R*I
 
Last edited by a moderator:
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To find Uab you have to find the potential drop across the resistor R1.
Try to simplify the circuit.
Hint : R3 and R5 are in parallel connection.
 


thank you.
can you explain me what that wire marked in red means?

[PLAIN]http://img822.imageshack.us/img822/2316/lkkj.png
 
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What do you think it means?
 


dado said:

Homework Statement


How to find Uab and Ucd in this circuit
http://img830.imageshack.us/img830/2852/556d.png

Homework Equations



The Attempt at a Solution


I have no idea how to find it.
I think that Uab=R*I
I don't see any voltage or current sources in that circuit, so if "Uab means R*I" then I suppose _you_ mean that it's the equivalent resistance "seen" between nodes a and b. Right?
 
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