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  4. A negative charge is placed at the centre of the non-conducting sphere. The direction of electric field on any point at the surface of the sphere is

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Q. A negative charge is placed at the centre of the non-conducting sphere. The direction of electric field on any point at the surface of the sphere is

TS EAMCET 2019

Solution:

When a negative charge is placed at the centre of the non-conducting sphere. The direction of electric field on any point at the surface of the sphere is radially inward, as shown in the figure, because electric field lines always enter into the negative charge comming from infinity.
image