Linked Questions

9 votes
1 answer
3k views

Is the ground really the ground? [duplicate]

I've always been too embarrassed to ask, but the notion of "ground" has always puzzled me. The way I understand it, in theory, is that the earth acts as a giant sink/pool of electron and thus will ...
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  • 193
1 vote
3 answers
11k views

What do we mean by "ground" in an electrical circuit? [duplicate]

What do we mean by ground in an electrical circuit? When we want to solve electrical circuits problems, we set a "ground" level which is mean that the potential on it equal to $0$. I wonder how the ...
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  • 325
3 votes
2 answers
648 views

what is a ground? [duplicate]

I have a basic question about electronic ground. For example, if electrons travel from the DC battery's negative terminal through the conductive wire to the positive terminal of a DC battery with a ...
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2 votes
3 answers
1k views

Understanding Common Floating Return [duplicate]

So I'm pretty new to electronics, and I'm getting slightly hung up on the concept of ground. I'm thinking the circuit diagrams below will help me to explain this frustration, because there's not an ...
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0 votes
1 answer
5k views

Different types of grounding [duplicate]

Can somebody briefly explain the different types of grounding with examples? Chassis ground Earth ground Signal ground
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1 vote
3 answers
1k views

Why can't we read voltage between just one pin of a loaded capacitor and any ground? [duplicate]

I know that we can only read voltage across a capacitor if it's two pins are connected to the voltmeter or can't talk about any potential difference between totally different systems if they do not ...
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-1 votes
2 answers
967 views

What makes something qualify as a ground? [duplicate]

I'm curious to what makes something qualify as a ground? I do some electrical work on my car. And the way I understand it, is that the chassis of the car is used as ground because it's such a big ...
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  • 1
0 votes
1 answer
219 views

Explaining "ground" and grounding as simple as possible [duplicate]

I am a student of electronics, I am also new to it but I am interested in the whole world of electronics. I've managed to get a hang of everything for now without much of a problem. But there is one ...
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  • 1
1 vote
3 answers
96 views

I thought that the ground was different from “earth”! [duplicate]

According to Paul Scherz in his Practical Electronics for Inventors, he mentions in Chapter 2, Theory, the following: Typically, the earth, with its infinite charge-absorbing ability and net zero ...
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  • 469
21 votes
4 answers
60k views

Difference between negative terminal and copper ground?

What's the difference between Negative and Ground? Like a negative terminal and a copper ground? I was reading that they are both the same; one person stated that negative is just more negative than ...
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  • 403
8 votes
4 answers
2k views

Is voltage a delta? Can it always be treated as a potential difference from a reference point?

I've always considered voltage to be absolute, i.e. something that is there or is not there. However, the more I think about it, it seems to be more like a delta. For example, let's say we have a ...
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  • 6,657
-1 votes
3 answers
1k views

What's ground? Is it the point defined as 0 V of potential or voltage? If the latter, is it because we measure its voltage with respect to itself?

I have some questions regarding the definition of ground that some people use. One question leads to the other so I've organized them below. Some people say that "ground is the point/node defined ...
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  • 908
7 votes
4 answers
4k views

How does ground mains work?

When I studied how AC mains power works, I learned that one of the wires is connected to the ground or a body of water so that it can get back to the power station. The concept baffles me. Every ...
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  • 2,009
5 votes
3 answers
18k views

Positive and negative potential via two power supplies with common ground?

I need to use a positive and negative potential on a circuit including an instrumentation amplifier. My lab only has single supply power supplies (only offers positive voltage). I know that I can ...
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  • 51
3 votes
2 answers
7k views

What is signal ground

I encountered signal ground symbol while studying 555 IC Please explain why isn't a simple ground connection used and how does signal ground differ from normal ground. I am a first year undergraduate, ...
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  • 241

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