A spherical capacitor consists of two concentric spherical conductors. The inner one of radius maintained at potential and the outer conductor of radius at potential . The potential at a point P at a distance x from the centre (where ) is
As we have learned
Potential Difference -
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Let and be the charges on the inner and the outer sphere respectively. Now is the total potential on the sphere of radius R1,
So,
and is the total potential on the surface of sphere of radius ,
So,
If V be the potential at point P which lies at a distance x from the common centre then
……..(iii)
Substracting (ii) from (i)
Option 1)
Option 2)
Option 3)
Option 4)
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