In a series circuit, resistances are added together. Therefore, adding another resistor increases the total resistance.
When a forth resistor is connected in series with three resistors, the total resistance
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Question context
This question is part of ⚡ Electrical Engineering within the broader 🛠️ Engineering Essentials subject and appears in the PTS Pakistan Testing Service preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.