Challenged by lightnings,thunderbolts,depleted ozone layer,volcanos radiating ions,elecrolyte brine of all oceans,earth quakes, atomic experiments and universal use of electro magnetic gadgets ; how does the earth remain neutral?
2006-07-12 19:58:24 · 4 answers · asked by J.SWAMY I ఇ జ స్వామి 7 in Science & Mathematics ➔ Physics
Blind_Cameleon has given you the correct answer.
The electric field intensity of Earth close to its surface is approximately 100 volts / meter.
Air breaks down at 3000 kv / m.
If the potential at infinity is taken equal to zero, the Earth’s potential is equal to 0.07 volt.
In electrical engineering the potential of the Earth is assumed to be zero.
The Earth’s capacitance is 700 micro farad.
2006-07-12 21:47:15 · answer #1 · answered by Pearlsawme 7 · 1⤊ 0⤋
Oh I think that Earth is neutral because we say so. To make clear what I mean, Earth is our reference point. The zero that we have made. It doesn't matter if other things charge it up. We just look at earth as zero and attribute the voltage to the other charged up thing.
Essentially, voltage needs to be thought of a difference in potential. Difference between what and what. Between the earth and the point being measured. And earth is taken to be zero.
2006-07-12 20:58:39 · answer #2 · answered by blind_chameleon 5 · 0⤊ 0⤋
The earth is so big, that if it's a few electrons out, it won't be charged enough for anyone to notice.
How it remains neutral over time is that when lightning strike in China, it's charging up clouds in Brazil, so the net effect is zero.
2006-07-12 20:05:05 · answer #3 · answered by tgypoi 5 · 0⤊ 0⤋
I was reminded of the basic laws of Thermo-Dynamics:
What was it.......
Lets See:.... ooh yeah yeah thats it:
Gravity Sucks,
Winds Blow,
Everything else is in equilibrium.
That's it: Everything in a closed system is in equilibrium, all charges cancel each other.
was that 101 or....second semester???
Yours: Grumpy
2006-07-12 20:15:56 · answer #4 · answered by Grumpy 6 · 0⤊ 0⤋