JAMB Physics 2009 Objective — Question 41
Question 41 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2009 Objective paper, with the correct answer and a full explanation.
Advertisement
41. Ten 60W and five 40W tungsten bulbs are on daily use for the same interval of time. If they are used for 1 day (24 hours), calculate the total energy consumed.
- A. 0.96kWh
- B. 1.92kWh
- C. 19.20kWhCorrect
- D. 20.00kWh
Explanation
Total power = (10x60)+(5x40) = 800W = 0.8kW. Energy = 0.8 x 24 = 19.2 kWh.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.