Grounding is used for dircharging In case of charging by

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    Charging Grounding
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Grounding a negatively charged sphere neutralizes it because the Earth, with its vast size and low capacitance, allows for the complete discharge of excess charge. When grounded, electrons from the sphere flow into the Earth, resulting in a neutral charge. In contrast, when two identical spheres share charge through conduction, the distribution depends on their relative sizes, with larger spheres acquiring more charge. The concept of capacitance explains that a sphere with low capacitance discharges quickly, while grounding to a large capacitance like the Earth allows for full discharge. The discussion also touches on induction, where grounding a neutral sphere with a positive rod nearby causes electrons to flow from the ground to the sphere, maintaining the induced charge separation.
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Grounding is used for dircharging..
In case of charging by conduction,let a sphere having excess negative charge is brought in contact with a neutral sphere..Half of the negative charge goes into neutral sphere..But when the former sphere having excess negative charge is grounded,why it becomes neutral? Why does it lose all the charge ?
 
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The transported charge depends on the size of the sphere. The Earth is pretty large.
 


Yes..It is but why it neutralizes the sphere? Why its different from case when 2 identical spheres ,one negatively charged nd one neutral share charge by conduction?
 


I think he's saying it shares yes, but depending on size, so if one is twice as big as the other it would get 2/3 the charge and the other would get 1/3, so if one is 100x as large it would get 99.01% of the charge... and so on..
 


Another way to think of it is in terms of capacitance: Q = CV -> dV/dQ = 1/C. If you discharge to something with low capacitance (your sphere) then it's voltage will change fairly quickly, perhaps not allowing you to totally discharge. If the capacitance is huge (earth), then voltage will remain constant allowing full discharge.
 


Oh..I understand now.. Thank u all
 


In case of charging with induction,when a positive rod is brought near the left side of neutral sphere,electron start moving to left and right side becomes postive due to lack of electrons.Now if we ground that sphere from right side and don't move the rod?Will electrons flow from ground to the sphere ?
 

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