# Electric field and the Earth

1. Feb 9, 2005

### thisisfudd

So, Measurements indicate that there is an electric field surrounding the Earth. Its magnitude is about 150 N/C at the Earth's surface and poitns inward toward the Earth's center. What is the magnitude of the electric charge on the Earth? Is it positive or negative?

I got the answer, but is it negative or positive?

2. Feb 9, 2005

### clive

If the vector $$\vec{E}$$ is pointing toward the center then the charge is negative.