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Assertion (A): A hot wire ammeter has a cramped scale. Reason (R): The heat is proportional to square of current.

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Assertion (A): A hot wire ammeter has a cramped scale. Reason (R): The heat is proportional to square of current. Answer: Both A and R are true and R is correct explanation of A

Question context

This question is part of 📡 Electronics and Communication Engineering (ECE) within the broader 🛠️ Engineering Essentials subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.