A long charged cylinder of linear charge density `lambda` is surrounded by a hollow co-axial conducting cylinder. What is the electric field in the space between the two cylinders ?

Explanation

To find the electric field in the space between a long charged cylinder and a hollow coaxial conducting cylinder, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Configuration**:
We have a long charged cylinder with a linear charge density \( \lambda \) and a hollow coaxial conducting cylinder surrounding it.

2. **Consider a Length \( L \)**:
...