Why is the theoretical value differ from the experimental value that you obtained from the current?

The theoretical value is based on calculations and predictions made prior to the experiment, taking into consideration ideal conditions, assumptions, and factors. The experimental value is obtained through actual measurements during the experiment, which can be influenced by various sources of error such as equipment limitations, environmental factors, human error, or unknown variables. Discrepancies between theoretical and experimental values are common and can provide valuable insights into the accuracy and limitations of the theoretical model.