Question

Two equal resistances are connected in series and parallel combination. The ratio of resistances in parallel and series combination is:

• A. 4 : 1
• B. 1 : 4
• C. 2 : 1
• D. 1 : 2

Answer 1

Answer: (B)

1 : 4

In series $R_{eff}=2R$
In parallel $R_{eff}=\frac{R}{2}$
$\frac{R}{R^{{}^{\prime }}}=\frac{2R}{\frac{R}{2}}=\frac{4}{1}$
$\Rightarrow \frac{Parallel}{Series}=\frac{1}{4}$