Archived Problem with non linear increase in voltage/amperage

  • Thread starter Thread starter samsanof
  • Start date Start date
  • Tags Tags
    increase Linear
AI Thread Summary
When testing thermoelectric generators, an observed phenomenon showed that increasing the number of generators in a circuit led to a slower increase in voltage while amperage increased more rapidly. This inverse relationship suggests that as more generators are added, their internal resistance impacts the overall voltage output. The increase in current can be attributed to the resistive load, which allows for higher current flow despite the voltage drop. The discussion highlights the complexity of generator behavior under varying loads and the effects of internal resistance. Understanding these dynamics is crucial for optimizing generator efficiency in practical applications.
samsanof
Messages
5
Reaction score
0

Homework Statement


Please try to keep this simple, I'm only fourteen. I was testing thermometric generators and the voltage and amperage generated at with increased efficiency. I noticed that when I increase the number of generators per circuit, the voltage increase slowed and the amperage increase accelerated. The two were inversely proportional to each other. Does anyone know why the voltage increase slowed down?

I was using .22 gauge iron wire and .22 gauge constantan wire, at a temperature of 353 K.

I have linked an image to the graphs from the experiment.

http://i.imgur.com/4sPIjsG.png


Homework Equations





The Attempt at a Solution

 
Last edited:
Physics news on Phys.org
samsanof said:

Homework Statement


I noticed that when I increase the number of generators per circuit, the voltage increase slowed and the amperage increase accelerated. The two were inversely proportional to each other. Does anyone know why the voltage increase slowed down?

Adding a generator increases the output voltage and if the load is resistive that increases the current. If the generators have significant internal resistance then the increasing current reduces the voltage all of them deliver not just the new one. That could explain why the voltage increase slows down.

However it doesn't explain why the current increase accelerated. It only explains why the current increases.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

When Voltage is Constant (DC), is current also constant?
Replies
3
Views
1K
Light bulb & Diode: linear or non-linear elements.
Replies
12
Views
9K
Transistor / Photodiode Circuit Switch Analysis
Replies
6
Views
3K
Electrolytic cell voltage vs amperage graph
Replies
1
Views
2K
Problem with electric diagrams.
Replies
13
Views
2K
Replacing a remote with a switch -- voltage drop problems :(
Replies
2
Views
2K
Transformer Voltage vs. Frequency
Replies
1
Views
19K
Question about bistable multivibrator op amps
Replies
1
Views
1K
What Does the Voltmeter Read When a Current Increases in an Inductor Loop?
Replies
35
Views
13K
Help to understand electrostatics fully
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top