JAMB Physics 2002 Question 31

Question 31

Electrical Energy and Power

An electric iron is rated 1000W, 230V. What is the resistance of its element?

  1. A.57.6Ω
  2. B.55.9Ω
  3. C.52.9Ω
  4. D.51.9Ω
Show the answer and explanation

Answer: C (52.9Ω)

Explanation

R = V2/P = 2302/1000 = 52.9 Ω.