JAMB Physics 1987 Question 43

Question 43

Electrical Energy and Power

A current of 0.5 A flows through a resistor when connected to a 40-V battery. How much energy is dissipated in 2 minutes?

  1. A.1200 J
  2. B.1500 J
  3. C.2400 J
  4. D.96000 J.
Show the answer and explanation

Answer: C (2400 J)

Explanation

Energy = IVt = 0.5 × 40 × 120 = 2400 J.