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**Problem Description: Non-uniform Linear Charge Density**

Given a non-uniform linear charge density

\[
\lambda = \lambda_0 \cdot \cos^2 \theta
\]

where \(\lambda_0\) is a constant, and \(\theta\) is the polar coordinate angle.

**Problem 10:**

Find the total charge "Q" placed on a straight rod bent into a circle of radius "R" centered on the origin in the x-y plane.

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Given

Here I've used Φ=θ.

Radius of circle formed by bending straight wire is R.

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