Quick question about finding Thevenin equivalents

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When finding Thevenin resistance, a test voltage or current source can be applied at the terminals to determine R_Th. An arbitrary value for the test source, such as 5 V, can be used to calculate the current I_t through the source. The Thevenin resistance can then be found using the formula R_Th = V_test/I_t. This method is valid and commonly used in circuit analysis. Understanding this approach is essential for accurately determining Thevenin equivalents.
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Homework Statement


When finding the Thevenin resistance for a circuit, there is a method involving applying either a test voltage source or a test current source at the terminals a and b. My teacher didn't really go into this in very much detail so I was wondering if you can specify any value for the test sources? i.e. I can place an arbitrary voltage source (say 5 V) at the terminals, find the current I_t through the source and have R_Th = 5/I_t?

Thanks


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