Question 37
Electrical Energy and PowerWhich of the following instruments consumes the highest current?
Electric iron: 250V, 1kW
Television set: 220V, 110W
Torch light: 6V, 30W
Immersion heater: 110V, 500W
- A.Electric iron
- B.Television set
- C.Torch light
- D.Immersion heater
Show the answer and explanation
Answer: C (Torch light)
Explanation
I = P/V: iron 1000 ÷ 250 = 4 A; TV 110 ÷ 220 = 0.5 A; torch 30 ÷ 6 = 5 A; heater 500 ÷ 110 ≈ 4.55 A. The torch light takes the most current.