Draw a graph of electric field E(r) with distance r from the centre of the shell for `0 le r le 0` .

Explanation

To draw the graph of the electric field \( E(r) \) with distance \( r \) from the center of a charged spherical shell for \( 0 \leq r \leq R \) (where \( R \) is the radius of the shell), we can follow these steps:

### Step 1: Understanding the Electric Field Inside a Charged Shell
For a uniformly charged spherical shell, the electric field inside the shell (for \( r < R \)) is zero. This is a consequence of Gauss's law, which states that the electric field inside a closed conductor is zero when in electrostatic equilibrium.

### Step 2: Electric Field at the Surface of the Shell
At the surface of the shell (where \( r = R \)), we can calculate the electric field using Gauss's law. The electric field just outside the surface of the shell is given by:
\[
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