Two different wires X and Y of same diameter but different materials are joined in series across a battery. If the number density of electrons in X is twice that in Y, find the ratio of drift velocity of electrons in the two wires .

Explanation

To solve the problem, we need to find the ratio of the drift velocities of electrons in two wires X and Y, given that the number density of electrons in wire X is twice that in wire Y.

### Step-by-Step Solution:

1. **Understanding the Given Information**:
- Let \( n_x \) be the number density of electrons in wire X.
- Let \( n_y \) be the number density of electrons in wire Y.
- According to the problem, \( n_x = 2n_y \).
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