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The electric field strength in air at NT...

The electric field strength in air at NTP is `3 xx 10^(6)V//m`. The maximum charge that can be given to a spherical conductor of radius 3m is

A

`3xx10^(-4)C`

B

`3xx10^(-5)C`

C

`3xx10^(-2)C`

D

`3xx10^(-1)C`

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