When r >> d, the electric field strength at the dot is +Q +) d +2Q +Q + Q 4TEgr2 4Q 4meo (72+d²) 4Q 4TEor 4Q 4TEor2 (x)
Q: surface charge density o on the surface of the sphere?
A: Correct option is 3rd one . Complete explanation an solution is in next step .
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A: The correct option is Following is the explanations
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A:
According to Coulomb's law the electric field at a point in space due to a charge is given by,
When ,
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