If a charged spherical conductor of radius $10 \mathrm{~cm}$ has potential $V$ at a point distant $5…
If a charged spherical conductor of radius $10 \mathrm{~cm}$ has potential $V$ at a point distant $5 \mathrm{~cm}$ from its centre, then the potential at a point distant $15 \mathrm{~cm}$ from the centre will be