alleryStart learning →Two resistors, each of resistance $R$, are connected in parallel. Their equivalent resistance is
A$2R$
B$R/2$
C$R$
D$R/4$
Answer & Solution
Correct answer: B. $R/2$
1. For two equal resistors in parallel: $\dfrac{1}{R_p} = \dfrac{1}{R} + \dfrac{1}{R} = \dfrac{2}{R}$.
2. So $R_p = R/2$.
3. (In series the same two would give $2R$.)
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch12 'Electricity', §12.5_
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