QJEEM24Ph1a4a: JEE Main 2024 Physics - Class 12 JEEM24Ph1a4a Solution: A thin metallic wire having cross sectional area of 10 − 4…

A thin metallic wire having cross sectional area of $${10}^{-4}{\mathrm{m}}^2$$ is used to make a ring of radius $$30\mathrm{cm}$$. A positive charge of $$2\pi \mathrm{C}$$ is uniformly distributed over the ring, while another positive charge of 30 $$\mathrm{pC}$$ is kept at the centre of the ring. The tension in the ring is ______ $$\mathrm{N}$$; provided that the ring does not get deformed (neglect the influence of gravity). (given, $$\frac{1}{4\pi {ϵ}_0}=9\times {10}^9$$ SI units)