The electrostatic potential (φ_r) of a spherical symmetric system, kept at origin, is shown. Given φ_r = φ_0 for r ≤ a, φ_r = 0 for a b. The critical value of φ_0 / a for which the magnitude of the total charge on the system is zero is (JEE Advanced 2020)

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Q.The electrostatic potential (φ_r) of a spherical symmetric system, kept at origin, is shown. Given φ_r = φ_0 for r ≤ a, φ_r = 0 for a < r ≤ b, φ_r = φ_0 / r for r > b. The critical value of φ_0 / a for which the magnitude of the total charge on the system is zero is (JEE Advanced 2020)

ε₀ / 2

ε₀

2 ε₀

4 ε₀

The correct solution involves applying the fundamental concept to derive the final value step by step...

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