The maximum value of electric field on the axis of a charged ring having charge $Q$ and radius $R$ is
The maximum value of electric field on the axis of a charged ring having charge $Q$ and radius $R$ is
- A
$\frac{1}{{4\pi { \in _0}}}\frac{Q}{{{R^2}}}$
- B
$\frac{1}{{4\pi { \in _0}}}\frac{{2Q}}{{3\sqrt 3 {R^2}}}$
- C
$\frac{1}{{4\pi { \in _0}}}\frac{{2\sqrt 2 Q}}{{3{R^2}}}$
- D
$\frac{1}{{4\pi { \in _0}}}\frac{Q}{{3{R^2}}}$
Similar Questions
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$(a)$ $(i)$ What will be the electric field at $O$, the centre of the pentagon ?
$(ii)$ What will be the electric field at $O$ if the charge from one of the corners (say $A$ $)$ is removed ?
$(iii)$ What will be the electric field at $O $ if the charge $q$ at $A$ is replaced by$ -q$ ?
$(b) $ How would your answer to $(a)$ be affected if pentagon is replaced by $n\,-$ sided regular polygon with charge $q$ at each of its corners ?
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$(a)$ $(i)$ What will be the electric field at $O$, the centre of the pentagon ?
$(ii)$ What will be the electric field at $O$ if the charge from one of the corners (say $A$ $)$ is removed ?
$(iii)$ What will be the electric field at $O $ if the charge $q$ at $A$ is replaced by$ -q$ ?
$(b) $ How would your answer to $(a)$ be affected if pentagon is replaced by $n\,-$ sided regular polygon with charge $q$ at each of its corners ?
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- [KVPY 2017]
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