Potential ground and electric charge

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SUMMARY

The discussion clarifies the concept of ground potential in electronics, asserting that the Earth is not a large conductor and does not possess a net electric charge. Instead, it is surrounded by the Van Allen Belts, which contain charged particles. The key property of ground in electrical circuits is its ability to maintain a constant potential regardless of current flow, allowing it to be defined as zero volts in electronic applications.

PREREQUISITES
  • Understanding of basic electrical concepts, including voltage and current.
  • Familiarity with the role of ground in electrical circuits.
  • Knowledge of the Van Allen Belts and their significance in Earth's electromagnetic environment.
  • Basic principles of circuit design and potential difference.
NEXT STEPS
  • Research the properties of the Van Allen Belts and their impact on Earth's electromagnetic field.
  • Study the principles of electrical grounding and its applications in circuit design.
  • Explore the concept of electric charge and how it relates to conductors and insulators.
  • Learn about the behavior of electric potential in various materials and environments.
USEFUL FOR

Electrical engineers, electronics students, and anyone interested in understanding the principles of grounding and electric charge in electronic systems.

sami23
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In electronics it is customary to define the potential of ground (thinking of the Earth as a large conductor) as zero. Is this consistent with the fact that the Earth has a net electric charge that is not zero?
 
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sami23 said:
the Earth has a net electric charge that is not zero
Really? Do you have a reference for what the net charge on the Earth is?
 
In electronics it is customary to define the potential of ground (thinking of the Earth as a large conductor) as zero. Is this consistent with the fact that the Earth has a net electric charge that is not zero?

I don't think either of these statements are correct.

The Earth is not a large conductor.
The Earth has no net charge itself , although it is surrounded by a charged 'halo' known as the Van Allen Belts.

The fundamental (electrical/electronic) property of an Earth or ground is that it does not change potential for any current flow within the normal circuit parameters, not that it has low or high resistance.
It is this property that allows the benchmark potenttial to be declared 'zero' in electronics.
 

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