Advertisements
Advertisements
प्रश्न
A fuse is rated 8A. Can it be used with an electrical appliance rated 5 KW, 200 V ? Give a reason.
Advertisements
उत्तर
`P = 5 xx 10^3 W`
V = 200
`:. P = IV`
`5 xx 10^3 = I[200]`
`5000/200 = I`
I = 25 A
25 A > 8 A
Yes it can be used ∵ current is greater than 8A
APPEARS IN
संबंधित प्रश्न
To which wire should the fuse be connected?
State the characteristics required in a material to be used as an effective fuse wire.
Why is the fuse wire fitted in a porcelain casing?
How is a fuse put in an electric circuit?
How does the thickness of a fuse wire depend on its current rating?
Why fuse wire must always be connected in ‘live’ wire? Explain.
Where are the cartridge type fuse used?
What is the rating of fuse used in power circuits, in domestic use?
How does the length of a fuse wire depend on its current rating?
Why is it not advisable to use a piece of copper wire as fuse wire in an electric circuit?
