A 100- $\Omega$ resistor and a 200- $\Omega$ resistor are connected in series. These two are then connected in parallel to a 150- $\Omega$resistor. The equivalent resistance of the set is
A) 50 $\Omega$.
B) 100 $\Omega$.
C) 200 $\Omega$.
D) 450 $\Omega$.

Question

A 100- $\Omega$ resistor and a 200- $\Omega$ resistor are connected in series. These two are then connected in parallel to a 150- $\Omega$resistor. The equivalent resistance of the set is
A) 50  $\Omega$.
B) 100  $\Omega$.
C) 200  $\Omega$.
D) 450 $\Omega$.

Quizplus · Accepted Answer

First, calculate the series resistance: 100 + 200 = 300. Then, use the parallel formula: 1/R = 1/300 + 1/150 = 1/100. So, the equivalent resistance is 100.

A 100- Ω\OmegaΩ Resistor and a 200- Ω\OmegaΩ Resistor Are Connected in Series

A 100- $\Omega$ Resistor and a 200- $\Omega$ Resistor Are Connected in Series