Dear student,
From 3 equal resistanes (each being equal to R), we can have the following combinations:
- All three resistances in series, net resistance being equal to 3R.
- All three resistances in parallel, net resistance being equal to R/3.
- Two resistances in parallel and the third being in series with them, net resistance being equal to R/3.
- Two resistances in series and the third being in parallel with all of them, the net resistance being equal to 2R/3.
Regards