A thin conducting ring of radius r has an electric charge + Q, if a point charge is…
Physics · JEE Advanced · NTA Exams — Electrostatics
A thin conducting ring of radius r has an electric charge + Q, if a point charge is placed at the centre of the ring, then tension of the wire of ring will be
- \(\frac{\mathrm{Qq}}{8 \pi \varepsilon_{0} \mathrm{r}^{2}}\)
- \(\frac{\mathrm{Qq}}{4 \pi \varepsilon_{0} \mathrm{r}^{2}}\)
- \(\frac{\mathrm{Qq}}{8 \pi^{2} \varepsilon_{0} \mathrm{r}^{2}}\)
- \(\frac{\mathrm{Qq}}{4 \pi^{2} \varepsilon_{0} \mathrm{r}^{2}}\)
Answer
(C) Qq 8 ^ 2 _ 0 r ^ 2
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