Question Detail
Question
A 20kΩ resistor is connected in series with a resistance of 40kΩ. What resistance R must be connected in parallel with its equivalent resistance to give 20kΩ
Correct Answer
Option A is the correct answer.
Detailed Explanation
R_series = 20 + 40 = 60kΩ. For parallel: 1/20 = 1/60 + 1/R => R = 120kΩ.
Hint
Calculate equivalent series resistance first, then use parallel formula.