Finding resistance in a resistor?

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SUMMARY

The discussion focuses on calculating resistance using the formula R=V/I, where V is voltage and I is current. Participants confirm that in a linear relationship between voltage and current, the slope of the voltage-current graph represents resistance. Specifically, as the current varies from 1 to 4 Amps, the slope of the best fit line directly indicates the resistance value in that range.

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  • Understanding of Ohm's Law (R=V/I)
  • Basic knowledge of linear equations and graph interpretation
  • Familiarity with voltage and current measurements
  • Experience with using voltmeters in circuit analysis
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Homework Statement


q6.jpg

Basically, this "battery" is actually a variable voltage source. The current is raised and the voltmeter measures the voltage in the resistor. What is the resistance in the region that the current goes from 1-4 Amps? (BTW, the red line is a best fit line.)


Homework Equations


R=V/I


The Attempt at a Solution


Ok, well since this is linear, the slope of this line is actually V/I, so would the slope of the line be the resistance?
 
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ninjadrummer8 said:

The Attempt at a Solution


Ok, well since this is linear, the slope of this line is actually V/I, so would the slope of the line be the resistance?

Yes it would be the slope of the line.
 

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