electric potential at 5 cm =V1 electric potential at 10 cm =V2 electric potential at 15 cm =V3 We know potential inside a conductor is same everywhere, therefore electric potential at 5 cm and 10 cm distance will be same, that is, V1=V2 Now, electric potential is given as V=
1
4πε0
q
R
⇒V∝
1
R
⇒V3>V1=V2 Thus, electric potential at 5 cm, 10 cm and 15 cm are V1=V2>V3