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JAMB Physics 2011 Question 16

Question 16

Quantity of Heat

A block of aluminium is heated electrically by a 30 W heater. If the temperature rises by 10°C in 5 minutes, the heat capacity of the aluminium is

  1. A.100 JK−1
  2. B.200 JK−1
  3. C.900 JK−1
  4. D.90 JK−1
Show the answer and explanation

Answer: C (900 JK−1)

Explanation

Heat supplied = Pt = 30 × 300 = 9000 J. Heat capacity = 9000 ÷ 10 = 900 J K−1.