A) \[\left( \frac{3}{7} \right)R\,\Omega \]
B) \[\left( \frac{7}{3} \right)R\,\Omega \]
C) \[\left( \frac{7}{8} \right)R\,\Omega \]
D) \[\left( \frac{8}{7} \right)R\,\Omega \]
Correct Answer: B
Solution :
\[\frac{1}{{{R}_{P}}}=\frac{1}{R}+\frac{1}{R}+\frac{1}{R}=\frac{3}{R}\] \[\Rightarrow \] \[{{R}_{P}}=\frac{R}{3}\Omega \] \[{{R}_{5}}=R+R=2R\Omega \] \[{{R}_{net}}={{R}_{P}}+{{R}_{S}}\] \[=2R+\frac{R}{3}=\frac{7R}{3}\Omega \]You need to login to perform this action.
You will be redirected in
3 sec