Two long parallel straight wires, each carrying a current of 2 A are placed at distance of 3 cm. Calculate the force acting per unit length of each wire. Also, state the nature of force between the wires if the currents flow in the same direction in both the wires.

Explanation

To solve the problem of calculating the force acting per unit length of two long parallel straight wires carrying currents in the same direction, we can follow these steps:

### Step 1: Understand the Given Information
We have two long parallel wires, each carrying a current \( I = 2 \, \text{A} \) and separated by a distance \( d = 3 \, \text{cm} = 0.03 \, \text{m} \).

### Step 2: Use the Formula for Force Between Parallel Wires
The formula for the force per unit length \( F/L \) between two parallel wires carrying currents is given by:

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