Question

Two V-I graphs A and B for series and parallel combinations of two resistors are as shown. Giving reason state which graph shows (a) series, (b) parallel combination of the resistors.

Answer 1

We know that V = IR or `1/"R"=1/"V"=` slope of graph given.

The resistance increases as the slope decreases. Graph B clearly has a greater slope than graph A. As a result, B has less resistance than A. As far as we are aware, combined series resistance is consistently greater than combined parallel resistance. As a result, A and B are series and parallel combinations, respectively.