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Central Board of Secondary Education · English · Class 10 · Science

Board exam · Science · 2026

15 questions · One at a time

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7
MCQ2 marks

An electric iron of resistance 20 Ω20\text{ }\Omega  takes a current of 5 A5\text{ A} . The heat developed in 30 s30\text{ s}  is:

  • A.15000 J15000\text{ J}Correct
  • B.1500 J1500\text{ J}
  • C.5000 J5000\text{ J}
  • D.300 J300\text{ J}
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