A steady current flows in a metallic conductor of non-uniform cross section. Are current and current density constant along the conductor?

Explanation

To solve the question regarding the steady current flowing in a metallic conductor of non-uniform cross-section, we will analyze the concepts of current and current density.

### Step-by-Step Solution:

1. **Understanding Current**:
- Current (I) is defined as the flow of electric charge per unit time. Mathematically, it is expressed as:
\[
I = \frac{Q}{t}
...