NCERT Exercise 2.4 - Electrostatic Potential and Capacitance
Question: A spherical conductor of radius 12 cm has a charge of 1.6 × 10⁻⁷ C distributed uniformly on its surface. What is the electric field (a) inside the sphere (b) just outside the sphere (c) at a point 18 cm from the centre of the sphere?
Answer: (a) **0 N/C** inside. (b) **10⁵ N/C** just outside. (c) **4.4 × 10⁴ N/C** at 18 cm from centre.
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