Series Resistance
Equivalent resistance of two resistors R and 2R in series is:
Select the correct option:
Solution
3R
In a series combination, the same current flows through all resistors. The total potential drop is the sum of individual drops: Vtotal=IR1+IR2=I(R1+R2) Rseries=R1+R2=R+2R=3R.
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About This Question
- Subject
- physics
- Chapter
- current electricity
- Topic
- series resistance
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
3R
In a series combination, the same current flows through all resistors. The total potential drop is the sum of individual drops: Vtotal=IR1+IR2=I(R1+R2) Rseries=R1+R2=R+2R=3R.
This easy difficulty physics question is from the chapter current electricity, covering the topic of series resistance. It appeared in the 2025 exam.
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