As I understand it, voltage is the difference in charge between two points. The greater that difference, the greater the current because more electrons will flow between the two points.
I thought a high resistance might explain this, but apparently the metal in electric fences have very low resistance.
In: Physics
Current is how much electricity is available. The voltage is how hard you are pushing it (i.e. the “pressure”).
The voltage is high, but the **available** current is low. Meaning, you’ll feel a good shock if you touch it, but if your resistance is too low and you try to draw too much current, the voltage will quickly drop until it is too low to be felt.
This is why things as simple as weeds along the fence can drain too much of the voltage for the fence to work well.
If the available current had been higher, even drawing a lot of current would leave the voltage high – and deadly.
With low available current, the idea is the voltage is high enough to hurt, but will drop quickly enough to not be really dangerous.
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