The dielectric strength of air is 3x10^6 V/m What is the maximum charge that can be safely stored in - Physics - Electrostatic Potential And Capacitance

Question

The dielectric strength of air is 3x10^6 V/m What is the maximum
charge that can be safely stored in the sphere of radius 10m

Vipra Mishra · Accepted Answer

Dear Student
The electric field strength on the surface of the sphere
E=kQr2For the maximum charge that can be safely stored in the sphere of radius r E should not be exceed to dielectic strength of airQ=Er2k=3×106×10×108
99×109=0 033 C =33mC

The dielectric strength of air is 3x10^6 V/m. What is the maximum charge that can be safely stored in the sphere of radius 10m.