Question 45
Electrical Energy and PowerWhat is the total electrical energy consumed by using an electric cooker rated 1000 W for 5 hrs?
- A.5.3 × 103 J
- B.6.5 × 103 J
- C.1.8 × 107 J
- D.2.3 × 107 J
Show the answer and explanation
Answer: C (1.8 × 107 J)
Explanation
Energy = power × time = 1000 W × (5 × 3600 s) = 1.8 × 107 J.