A conductor of length L is connected to a dc source of emf `epsilon`. If this conductor is replaced by another conductor of same material and same area of cross-section but of length 3L, how will the drift velocity change?

Explanation

To solve the problem, we need to analyze how the drift velocity of charge carriers in a conductor changes when the length of the conductor is altered.

### Step-by-Step Solution:

1. **Understand Drift Velocity**:
The drift velocity \( v_d \) of charge carriers in a conductor is given by the formula:
\[
v_d = \frac{I}{n e A}
...