How Does Measurement Sensitivity Affect Current Detection in a Circuit?

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Homework Help Overview

The discussion revolves around the concept of measurement sensitivity in the context of current detection within electrical circuits. Participants are exploring how sensitivity affects the ability to distinguish between small changes in current readings.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to clarify the distinction between measurement sensitivity and resolution, with some questioning how sensitivity impacts the detection of small changes in current. There is also a focus on specific numerical examples to illustrate these concepts.

Discussion Status

The conversation is ongoing, with participants expressing confusion over the definitions of sensitivity and resolution. Some have provided clarifications, while others are seeking further understanding of how these concepts apply to specific scenarios.

Contextual Notes

There appears to be some misunderstanding regarding the definitions of sensitivity and resolution, which is influencing the discussion. Participants are using specific examples to frame their questions and clarify their thoughts.

Andy_ToK
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Hi,
I have a question about the sensitivity of measurements in experiments.
e.g. We measure the current of a circuit and it's 1A. if the sensitivity is 1 part in 100, does that mean we can't distinguish the current between 1-1/100A and 1+1/100A?

Thanks
 
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Thanks, that's what i meant
 
Whoops I just told you the wrong thing. I just told you about resolution.

Sensitivity is the change in output/ the change in input.

So if you have a change of 1V in your circuit, the instrument will show a change in 1/100 V.
 
ya, so it can't tell when the change is smaller than 1/100V, right?
 
No, that's not what sensitivity is. Its the ratio of the change in input to the change in output. Thats totally different from what I told you at first, the resolution.
 
Sorry, but I'm confused now.
Let's just stick to the example i mentioned. the initial current is 1A and the sensitivity of the ammeter is 1 part in 100. And if the current changed from 1A to (1+1/1000)A, what value will be displayed on the ammeter?
 
anyone？
Thanks
 

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