A rod of length L has a total charge Q distributed uniformly along its length. It is bent in the shape of a semicircle. Find the magnitude of the electric field at the centre of curvature of the semicircle.

Explanation

To find the magnitude of the electric field at the center of curvature of a semicircular rod with a total charge Q distributed uniformly along its length L, we can follow these steps:

### Step 1: Determine the linear charge density
The linear charge density (λ) is defined as the total charge (Q) divided by the length (L) of the rod.

\[ \lambda = \frac{Q}{L} \]
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