Question

$V-I$ graphs for parallel and series combination of two identical resistors are as shown in the figure. Which graph represents parallel combination?

• A. $A$
• B. $A$ and $B$ both
• C. Neither $A$ nor $B$
• D. $B$

Answer 1

The correct option is A $A$

We know that, slope of $VI$ graph $=$Resistance

$\Rightarrow$ More will be slope; more will be resistance

Also $R_{\text{s}eries}>R_{\text{p}arallel}$

$\Rightarrow$ (Slope)${}_{\text{series}}>$(Slope)${}_{\text{parallel}}$

It is clear that Slope of $B>$ Slope of $A$

$\therefore$ Graph $A$ represents parallel combination.

Hence, option (a) is correct.