Question 40
Electrical Energy and PowerA 3000-W electric cooker is to be used on a 200 V mains circuit. Which of the fuses below can be used safely with the cooker?
- A.2 A
- B.5 A
- C.10 A
- D.20 A
Show the answer and explanation
Answer: D (20 A)
Explanation
The cooker draws I = P/V = 3000/200 = 15 A. The fuse must be rated just above this, so only the 20 A fuse will not blow in normal use.