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When 4 equal resistors are connected in series with a battery they dissipate power of 10W. The power dissipated through any of them if connected across the same battery will be _____?

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When 4 equal resistors are connected in series with a battery they dissipate power of 10W. The power dissipated through any of them if connected across the same battery will be _____? Answer: 40 W

When resistors are connected in series, total resistance increases, and power output decreases. When one resistor is connected directly, total resistance decreases by a factor of 4, so power increases by 4² = 16 times for the same voltage — hence 10 × 4 = 40 W.

Question context

This question is part of ⚡ Electrical Engineering within the broader 🛠️ Engineering Essentials subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.