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Find the electric field at the centre of a semicircular ring if it is uniformly positive charged.

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To find the electric field at the center of a uniformly positively charged semicircular ring, we can follow these steps: ### Step-by-Step Solution: 1. **Define the Problem**: - We have a semicircular ring of radius \( R \) with a uniform linear charge density \( \lambda \). We need to find the electric field at the center of the semicircle. 2. **Consider a Small Element**: ...
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