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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] medium exam-ready
An electric motor operates at 220 V and draws a current of 5 A. The energy consumed by the motor in 1 hour is: (A) 1100 J (B) 3.96 × 10³ J (C) 3.96 × 10⁶ J (D) 3.96 × 10⁴ J
  1. A 220 J
  2. B 1100 J
  3. C 3.96 × 10⁶ J
  4. D 1100 W
Generated by claude-sonnet-4-6 · 2026-06-26 01:08 · grounding rag
Model Answer

(C) 3.96 × 10⁶ J

Energy = V × I × t = 220 × 5 × 3600 = 3,960,000 J = 3.96 × 10⁶ J

Explanation

Use E = VIt; convert 1 hour to 3600 seconds. Power P = 220 × 5 = 1100 W; Energy = 1100 × 3600 = 3.96 × 10⁶ J. Note: option (D) in the question stem matches option (C) in the given options list — the correct answer is 3.96 × 10⁶ J.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.