How Does Increasing Resistance Affect Current Flow in a Circuit?

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In summary, the question is asking for someone to graph current as a function of resistance, while keeping the values of R1 and R2 constant.
  • #1
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Homework Statement
Graphically represent in EXCEL or equivalent program the characteristics
current-resistance (abscissa) of the three currents in the circuit. Comment the obtained graphic.
(Hint: Plot the theoretical, simulated and experimental characteristics and compare the
differences between values and their evolution).
Relevant Equations
U=RI (OHM'S LAW)
For example given the circuit
Captura de ecrã 2021-11-20 201327.png


I make the graphs :
Captura de ecrã 2021-11-20 201958.png


and comment that or graph 1 as resistance grows larger the current grows smaller (is inversely proportional) I will use the simulation and experimental data to check the values and conclude that this act is true.
Is this what I'm supposed to do?
 
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  • #2
Those are odd-looking graphs. Where do those numbers come from? Which branch(es) of the circuit do the graphs refer to? What is being varied and what is constant? (e.g. if you are plotting the current through R2 as R2 varies, is R held constant? At what value? This is important, though the question as quoted doesn't make it clear.)
 
  • #3
mjc123 said:
Those are odd-looking graphs. Where do those numbers come from? Which branch(es) of the circuit do the graphs refer to? What is being varied and what is constant? (e.g. if you are plotting the current through R2 as R2 varies, is R held constant? At what value? This is important, though the question as quoted doesn't make it clear.)
Above the graph you can se the values o current and resistance and I apologise or not explaining that the order goes rom top to botom:R1,R2,R.
 
  • #4
But that is meaningless. Each set of values {R1, R2, R} will be associated with a particular value of the current - or, to be precise, with a particular set of values {IR1, IR2, IR}. What you need to do is graph one of these current values as a function of one of the resistances, e.g. IR vs. R while holding R1 and R2 constant. And do this in turn for each of the 3 currents.
 
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  • #5
mjc123 said:
the question as quoted doesn't make it clear
This ^^^.
Can you post the complete question? Maybe post a (good) picture with your phone?
What component values are fixed, and which are varied in the analysis?
 

FAQ: How Does Increasing Resistance Affect Current Flow in a Circuit?

What is current-resistance analysis?

Current-resistance analysis is a method used to measure the relationship between current (the flow of electric charge) and resistance (the opposition to the flow of electric charge) in an electrical circuit. It is used to determine the resistance of a component or the overall resistance of a circuit.

How is current-resistance analysis performed?

Current-resistance analysis is typically performed by using a multimeter, which measures both current and resistance. The multimeter is connected to the circuit and the current and voltage are measured. By using Ohm's law (V=IR), the resistance can be calculated.

What is the purpose of current-resistance analysis?

The purpose of current-resistance analysis is to understand the behavior of electrical circuits and components. It allows scientists to determine the resistance of a specific component, identify faulty components, and analyze the overall performance of a circuit.

What factors can affect the results of current-resistance analysis?

There are several factors that can affect the results of current-resistance analysis. These include temperature, material of the components, and the accuracy of the measuring instruments. It is important to control these factors in order to obtain accurate results.

How is current-resistance analysis used in real-world applications?

Current-resistance analysis is used in a variety of real-world applications, such as in the design and testing of electrical circuits and components in industries like electronics, automotive, and aerospace. It is also used in research and development to improve the efficiency and performance of electrical systems.

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