Two parallel wires carrying current in the same direction attract each other while two beams of electrons travelling in the same direction repel each other. Why?

Explanation

To understand why two parallel wires carrying current in the same direction attract each other while two beams of electrons traveling in the same direction repel each other, we can break down the explanation into several steps.

### Step-by-Step Solution:

1. **Understanding Current-Carrying Wires**:
- When an electric current flows through a wire, it generates a magnetic field around it. The direction of this magnetic field can be determined using the right-hand rule.

2. **Magnetic Field Around Wires**:
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