Rankers Physics
Topic: Electrostatics
Subtopic: Electric Field

A thin semi-circular ring of radius r has a positive charge q distributed uniformly over it. The net field \overrightarrow{E} at the centre O is : Image related to
-\frac{q}{2\pi^{2}\varepsilon_{0}r^{2}}\hat{j}
\frac{q}{2\pi^{2}\varepsilon_{0}r^{2}}\hat{j}
\frac{q}{4\pi^{2}\varepsilon_{0}r^{2}}\hat{j}
-\frac{q}{4\pi^{2}\varepsilon_{0}r^{2}}\hat{j}

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