Create new sheet and append measurements in the new sheet using Python

Hello Experts…I have a task to make a python code that will add new sheet (ex. SheetX) into existing excel file. If sheet name already there will just overwrite. Then add all measurements in that new sheet.
Example code like:

Voltage = 12V
Current = 5A
RL = 200 ohms

path = r"C:\Users\JohnDoe\Desktop\excelread.xlsx"

with pd.ExcelWriter(path, engine='openpyxl', mode='a') as writer:  
   Voltage.to_excel(writer, sheet_name='Measurement')
    Current.to_excel(writer, sheet_name='Measurement')
    RL.to_excel(writer, sheet_name='Measurement')

Please help create and share a simple sample code, I will do my best to understand and modify it myself…thank you