Question

what is active cell?

Answer 1

An active cell refers to a cell in excel spreadsheet that is currently selected by clicking mouse pointer or keyboard keys. An active cell is bounded by a heavy border around it.

Answer 2

In computer ,
An active cell refers to the currently selected cell in spreadsheet, whenever you click on specific cell within spreadsheet it becomes the active cell. Once a cell selected you can enter values or function into the cell.
It is also referred as cell pointer or selected cell.

Hope it will help you.