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JAMB Physics 1978 Question 35

Question 35

Electrical Energy and Power

A potential difference of 6 V is used to produce a current of 5 A for 200 s through a heating coil. The heat produced is

  1. A.4800 cal
  2. B.6000 cal
  3. C.2400 J
  4. D.240 kcal
  5. E.6000 J.
Show the answer and explanation

Answer: E (6000 J.)

Explanation

Heat = IVt = 5 × 6 × 200 = 6000 J.