- #1
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I do not understand the concept of electrical ground, or why it works. Let me explain.
In elementary school physics, one learns that for a current to take place, you need a battery with positive and negative poles. This creates a voltage that makes charges run from plus to minus, because pluses would like to be with minuses. So therefore, if you connect wires and a lamp, you can make the lamp shine.
This is how I learned that an electric current arise. So I cannot understand, how there could be a current from, for instance the plus pole of the battery to the Earth - there are no minuses in the Earth that would attract the pluses, the Earth is neutral (as opposed to the minus pole on the battery that is negative).
In elementary school physics, one learns that for a current to take place, you need a battery with positive and negative poles. This creates a voltage that makes charges run from plus to minus, because pluses would like to be with minuses. So therefore, if you connect wires and a lamp, you can make the lamp shine.
This is how I learned that an electric current arise. So I cannot understand, how there could be a current from, for instance the plus pole of the battery to the Earth - there are no minuses in the Earth that would attract the pluses, the Earth is neutral (as opposed to the minus pole on the battery that is negative).