Q.A non-conducting ring has charge density λ = λ₀ sinθ. The electric field at centre is

\dfrac{\lambda_0}{ \pi \epsilon_0 R}

zero

\dfrac{\lambda_0}{2 \pi \epsilon_0 R}

\dfrac{\lambda_0}{4 \pi \epsilon_0 R}

The correct solution involves applying the fundamental concept to derive the final value step by step...

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