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**Electric field on the axis of a ring charge**

### Electric field on the axis of a ring charge

**Latex Code**:

**MathML Code**:

$E}_{x}=\backslash frac\mathrm{kQx}{({x}^{2}+{a}^{2})}^{3\backslash mathord/\backslash vphantom322$ |

**MathType 5.0**: