uced-at-a-field-point-by-a-charge-element-dq-located-a-displacement-rvector-away

Question

Which expression correctly gives the differential electric field vector produced at a field point by a charge element dQdQ located a displacement r→\overrightarrow{r} away?

Accepted Answer

dE→=k⋅dQ⋅r→r3d\overrightarrow{E}=\frac{k\cdot dQ\cdot\overrightarrow{r}}{$$r^3$$}

Answer

dE→=k⋅Q⋅r^r2d\overrightarrow{E}=\frac{k\cdot Q\cdot\hat{r}}{$$r^2$$}

Answer

dE→=k⋅dQ⋅r→r2d\overrightarrow{E}=\frac{k\cdot dQ\cdot\overrightarrow{r}}{$$r^2$$}

Answer

dE→=k⋅Q⋅dr→r3d\overrightarrow{E}=\frac{k\cdot Q\cdot d\overrightarrow{r}}{$$r^3$$}

Which expression correctly gives the differential electric field vector produced at a field point by a charge element dQdQ located a displacement r→\(\overrightarrow{r}\) away?

Which expression correctly gives the differential electric field vector produced at a field point by a charge element $d Q$ located a displacement $\vec{r}$ away?