An oil drop of radius r carrying a charg...

An oil drop of radius r carrying a charge q remain stationary in the presence of electric field of intensity E. If the density of oil `rho` , then

`E=4/3pi r^(3)rhogq`

`E=4/3pir^(3)rho g`

`E=4/3pir^(3)rho g//q`

`E=4/3pir^(3)rho//g^(3)`

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