A conducting sphere of radius 0.20 m is charged so that the electric field just…

PHYSICS · Single correct · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance

Problem

A conducting sphere of radius 0.20 m is charged so that the electric field just outside its surface has magnitude 9.0 × 10⁴ N/C. What surface charge density σ must the sphere carry? (a) 1.6×10−6 C/m21.6\times10^{-6}\ \text{C/m}^2 (b) 4.0×10−7 C/m24.0\times10^{-7}\ \text{C/m}^2 (c) 8.0×10−7 C/m28.0\times10^{-7}\ \text{C/m}^2 (d) 1.6×10−7 C/m21.6\times10^{-7}\ \text{C/m}^2

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