Two long and parallel straight wires A and B carrying currents of `8*0A` and `5*0A` in the same direction are separated by a distance of `4*0cm`. Estimate the force on a `10cm` section of wire A.

Explanation

To solve the problem, we will follow these steps:

### Step 1: Understand the Given Data
We have two long parallel wires A and B carrying currents \( I_1 = 8 \, \text{A} \) and \( I_2 = 5 \, \text{A} \) respectively. The distance between the wires is \( R = 4 \, \text{cm} = 0.04 \, \text{m} \). We need to find the force on a \( 10 \, \text{cm} \) section of wire A.

### Step 2: Formula for Force Between Parallel Wires
The force per unit length \( F/L \) between two parallel wires carrying currents can be calculated using the formula:
\[
...