An electric kettle consumes 1 kw of electric power
Asked by admin @ in Physics viewed by 271 People
An electric kettle consumes 1 KW of electric power when operated at 220V. A fuse wire of what must be used for it?
Answered by admin @
P = 1KW = 1000 W
V = 220 V
P = V×I
1000 = 220×I
I = 4.54 A
P = V×(V/R)
P = V^2/R
1000 = (220)^2/R
R = 48.4 ohm
hence the fuse wire used should withstand the 48.4 A of current.
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