Find the radius of an isolated sphere capable of being charged to 1 million volt potential before sparking into the air, given that breakdown voltage of air is 3 × 104 V/cm

Find the radius of an isolated sphere capable of being charged to 1 mi

1.	Find the radius of an isolated sphere capable of being charged to 1 million volt potential before sparking into the air, given that breakdown voltage of air is 3 × 104 V/cm
A.	0.33 metre
B.	0.43 metre
C.	0.53 metre
D.	0.63 metre
Answer» B. 0.43 metre

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Find the radius of an isolated sphere capable of being charged to 1 million volt potential before sparking into the air, given that breakdown voltage of air is 3 × 104 V/cm

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