The electric field at a point in a region is given by E = r | r |^ 3 , where is a…
Physics · Class 12 · CBSE — Electrostatic Potential & Capacitance
The electric field at a point in a region is given by \(\vec{E}=\alpha \frac{\vec{r}}{|\vec{r}|^{3}}\) , where \(\alpha\) is a constant and r is the distance of the point from the origin. The magnitude of potential of the point is:
- \(\frac{\alpha}{{r}}\)
- \(\frac{\alpha {r}^{2}}{2}\)
- \(\frac{\alpha}{2 {r}^{2}}\)
- \(-\frac{\alpha}{{r}}\)
Answer
(A) r
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