Question

what is the potential at the center of the sphere
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Answer 1

Answer:

hollow sphere is kq^2/R

Answer 2

Answer:

If the sphere here is the solid one….then the potential at the centre will be 1.5kq/R. This can be easily seen from the formula:

POTENTIAL AT A DISTANCE r FROM the centre of a solid sphere of radius R (r is less than R ) -KQ(3R^2-r^2)/2R^3

For the above case r=0.