A spherical conductor of radius 10 cm ha...

A spherical conductor of radius 10 cm has a charge of 3.2 x 10^-7 C distributed uniformly. What is magnitude of electric field at point 15 cm from centre of sphere?

`1.28 x 10^4 N/C`

`1.28 x 10^5 N/C`

`1.28 x 10^6 N/C`

`1.28 x 10^7 N/C`

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