How to find resistance with the graph
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Answered by
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Answer
Resistance is the intermediate value between voltage and current flowing through a conductor.
V = IR.
OHM'S LAW
HOPE IT HELPS YOU..
MARK AS BRAINLIEST
Resistance is the intermediate value between voltage and current flowing through a conductor.
V = IR.
OHM'S LAW
HOPE IT HELPS YOU..
MARK AS BRAINLIEST
Answered by
3
short answer :
Actual value of V/I at any point on graph gives you effective resistance at the point.
Slope of graph at any point dV/ dI gives you transitional resistance at any point. These two will not be same for nonlinear resistance
additional :
If the graph is sufficiently linear, calculating slope at two known points in this linear region can give you resistance. But if your graph isn’t linear, then you have to calculate instantaneous resistance as it clearly varies with current.
To measure instantaneous resistance at say (v,i) on the V-I graph, first draw a tangent to the curve at that particular point. Now calculate the slope of that tangent which will be instantaneous resistance at (v,i).
If you have an equation in V & I that exactly fits your V-I curve, a simple differentiation can give you instantaneous resistance i.e., dV/dI will give you instantaneous resistance at any point on your curve.
Drawing tangent can be quite tiresome and also prone to severe manual and system errors. So to measure resistance with reasonable accuracy, we need to consider an approximately linear region near your point of interest [Point (v,i) here] and find slope of that region.
Actual value of V/I at any point on graph gives you effective resistance at the point.
Slope of graph at any point dV/ dI gives you transitional resistance at any point. These two will not be same for nonlinear resistance
additional :
If the graph is sufficiently linear, calculating slope at two known points in this linear region can give you resistance. But if your graph isn’t linear, then you have to calculate instantaneous resistance as it clearly varies with current.
To measure instantaneous resistance at say (v,i) on the V-I graph, first draw a tangent to the curve at that particular point. Now calculate the slope of that tangent which will be instantaneous resistance at (v,i).
If you have an equation in V & I that exactly fits your V-I curve, a simple differentiation can give you instantaneous resistance i.e., dV/dI will give you instantaneous resistance at any point on your curve.
Drawing tangent can be quite tiresome and also prone to severe manual and system errors. So to measure resistance with reasonable accuracy, we need to consider an approximately linear region near your point of interest [Point (v,i) here] and find slope of that region.
Pratiksh:
please mark it as a brainalist please please don't forget
lol u have copied this answer from Google lol
sorry no
it's from quora
whatever, u have copied, don't do such things, it's ok
I hv not send u answer to listen ur leqture
then go offline lol
u go if you want
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