1. It has been found that metals are better conductors than electrolytic solution of the same metal.
2. This is because,in metals the electricity carriers are electrons,which are very small in size and face a very little resistance while conducting.
3. The case is different in electrolytes as ions conduct electricity and they are large in size due to hydration energy and face a lot of resistance.
4. Thus Copper metal is better conductor than copper sulphate solution.