Solving Electric Current: Find Total Resistance (Rt)

AI Thread Summary
To find the total resistance (Rt) in the given circuit, start by applying Kirchhoff's current law to determine the total voltage. It's important to identify which resistors are in series and which are in parallel, as this affects the calculations. A test current of 1A can simplify the analysis, allowing for the use of the formula R = V/I to calculate total resistance. The circuit is identified as a bridge circuit, which requires substituting the existing resistors with an equivalent circuit for accurate calculations. Understanding these concepts is crucial for solving complex circuit analysis problems effectively.
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Above is a battery connected through a circuit. We have to find the Total Resistance (R t) by solving in terms of R.


I'm really confused because I'm not sure what's parallel or in series.

Please, help!
 
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Well, for this type of circuit, you need to have a test current of 1A. Figure out the total voltage in the circuit using Kirchhoff's current law, and then find the total resistance by using R = V/I.

It's quite a hard circuit analysis question, in my opinion.
 
The one you have there is called a bridge circuit. To calculate total resistance, you must substitute the given resistor circuit with an equivalent one.
 

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