A cell in which you are currently working is referred as _______

- An active cell refers to the currently selected cell in a spreadsheet.
It can be identified by a bold (typically blue) outline that surrounds the cell.
The standard way to reference the location of an active cell is with a column/row combination, such as A2 (first column, second row) or B5 (second column, fifth row).

- Whenever you click on a specific cell within a spreadsheet, it becomes the active cell. Once a cell is selected, you can enter values or a function into the cell.
Most spreadsheet programs will display the value of the active cell both inside the cell itself and within a long text field in the spreadsheet toolbar.

Source: TechTerms