Question

The insulating property of air breakdown is 9x10^5 V/m. What is the max charge that can stored on a copper sphere of

diameter 2 m ?​

Answer 1

Answer: 100.48 ×10^-4C

Explanation:we know E= 9×10^9 × q/r^2

So q is 100.48 × 10^-4C.