Question: Though air is a very good insulator, it breaks down if the electric field intensity exceeds the critical value Eer= 3x10 N/C. What is

Though air is a very good insulator, it breaks down if the

Though air is a very good insulator, it breaks down if the electric field intensity exceeds the critical value Eer= 3x10 N/C. What is the maximum charge which can be placed on a metal ball of radius R= 0.15 m if this ball is in the air?

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