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 given a surface charge density of 1 electron/m², we will follow these steps:

### Step 1: Understand the Given Information
- Surface charge density (σ) = 1 electron/m²
- Radius of the Earth (R) = 6400 km = 6400 × 10³ m
- Charge of an electron (e) = -1.6 × 10⁻¹⁹ C

### Step 2: Calculate the Total Charge (Q) on the Earth's Surface
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