A current of `1*0A` flowing in the sides of an equilateral triangle of side `4*5xx10^-2m`. Find the magnetic fied at the centroid of the triangle.

Explanation

To solve the problem of finding the magnetic field at the centroid of an equilateral triangle with a current flowing through its sides, we can follow these steps:

### Step 1: Understand the Geometry of the Triangle
We have an equilateral triangle with each side of length \( A = 4.5 \times 10^{-2} \, \text{m} \). The centroid of the triangle is the point where the three medians intersect, and it is located at a distance of \( \frac{A}{\sqrt{3}} \) from each vertex.

### Step 2: Magnetic Field Due to One Side
The magnetic field \( B \) at a distance \( r \) from a long straight conductor carrying current \( I \) is given by the formula:
\[
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