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A Fuse is Rated 8a. Can It Be Used with an Electrical Appliance Rated 5 Kw, 200 V ? Give a Reason. - Physics

A fuse is rated 8A. Can it be used with an electrical appliance rated 5 KW, 200 V ? Give a reason.

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Solution

`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

Concept: Household Circuits - Fuses
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