alleryTwo resistors R₁ and R₂ in SERIES have equivalent resistance:
AR₁ + R₂
BR₁ R₂ / (R₁ + R₂)
C(R₁ + R₂) / 2
D1 / (R₁ + R₂)
Answer & Solution
Correct answer: A. R₁ + R₂
1. Same current through both; voltages add.
2. R_eq = R₁ + R₂ for series.
3. (B) is the parallel formula.
_Source: syllabus Physics Ch 3 §3.10 Series and Parallel Combinations_
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