Suppose that earth has a surface charge density of 1 electron /`"metre" ^(2)` . Calculate earth s potential and electric field just outside earth surface . Radius of earth 6400 km.

Explanation

To solve the problem of calculating the electric potential and electric field just outside the Earth's surface, we will follow these steps:

### Step 1: Convert Surface Charge Density to Coulombs
The surface charge density is given as 1 electron per square meter. The charge of one electron is approximately \(1.6 \times 10^{-19}\) coulombs. Therefore, the surface charge density (\(\sigma\)) can be expressed as:
\[ \sigma = 1 \text{ electron/m}^2 = 1.6 \times 10^{-19} \text{ C/m}^2 \]

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