Two resistances X and Y are connected turn by turn : (i) in parallel, and (ii) in series. In which case the resultant resistance will be less than either of the individual resistance?

If 3 resistances of 3 ohm each are connected in parallel, what will be their total resistance?

How should the two resistances of 2 ohms each be connected so as to produce an equivalent resistance of 1 ohm?

What possible values of resultant resistance one can get by combining two resistances, one of value 2 ohm and the other 6 ohm?

Show how you would connect two 4 ohm resistors to produce a combined resistance of (a) 2 ohms (b) 8 ohms.