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Calculate the earth's potential. Assume ...

Calculate the earth's potential. Assume earth has a surface charge density of 1` "ectron/metre"^(2)`.(Given,the electronic charge = `-1.6xx10^(-19)C," earth's radius "=6.4 xx10^(6)m,e_(0) = 8.9xx10^(-12)c^(2)//Nm^(2)`)

A

`-0.115 V`

B

0.215 v

C

`-0.225 v`

D

0.185 v

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