When connected to a mains of 250V, the fuse rating in the plug of an…

When connected to a mains of 250V, the fuse rating in the plug of an electric device of 1 KW is
  • A.
    2 A
  • B.
    3 A
  • C.
    4 A
  • D.
    5 A
Correct Answer: Option C
Explanation

1 KW = 1000 watts, power P = IV, thus for a mains of 250 V, the maximum permissible Current I = 1/V = 1000/250 = 4 A
Thus the fuse rating in the plug should be 4 A

You May Also Like