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A thin plastic rod is bent into a circular ring of radius \(R\). It is uniformly charged with charge density \(\lambda\)…

Q1

A thin plastic rod is bent into a circular ring of radius \(R\). It is uniformly charged with charge density \(\lambda\). The magnitude of the electric field at its centre is :

a

\(\frac{\lambda}{2 \varepsilon_0 R}\)

b

Zero

c

\(\frac{\lambda}{4 \pi \varepsilon_0 R}\)

d

\(\frac{\lambda}{4 \varepsilon_0 R }\)

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