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Question
The capasitance of earth is said to be infinitive.. Because it's potential is zero.. But by the formulae of spherical capasitor it is calculated that it is 711micro farad.. Which value of earth's capasitance is correct?

Answer
Look here:

http://faculty.wwu.edu/vawter/PhysicsNet/Topics/Capacitors/EarthCap.html

The above rendition calculates out to be 700 nano farads.

I don't understand your statement that the capacitance of the earth is infinite!  Where did you get that from?

Let me know if you need more.  

Electronics

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Electronics questions about AC, DC and digital theory.

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Graduate electrical engineer with over 40 years in electronic design, manufacturing, project organization and patent review. Experience in fields of industrial and consumer electronics (audio, video, acoustics, etc.)

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IEEE (Institute of Electrical and Electronics Engineers); Senior Life member AES (Audio Engineering Society), Fellow Life member

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BSEE University of North Dakota

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