A hollow insulated conducting sphere is given a positive charge of \[10\,\mu C\]. What will be the electric field at the centre of the sphere if its radius is 2 m? [AIPMT 1998]

• A. Zero
• B. \[5\,\mu \,C{{m}^{-2}}\]
• C. \[20\,\mu \,C{{m}^{-2}}\]
• D. \[8\,\mu \,C{{m}^{-2}}\]