Question

A fuse is rated 8A. Can it be used with an electric appliance rated 220V,5kw?Give a reason.​

Answer 1

Answer:

P = 5 x103 W (i) V = 200 P =IV 5 x103 = I[200] 5000 /200= I I = 25 A 25 A > 8 A Yes it can be used. current is greater than 8A (ii) Fuse, MCB SwitchRead more on Sarthaks.com - https://www.sarthaks.com/143480/i-a-fuse-is-rated-8a-can-it-be-used-with-an-electrical-appliance-rated-5-kw-200-v-give-a-reason

Answer 2

Answer:

No it can't be used Bcoz 5kw=220xI

~ 23A

There fore such a low rating fuse can't be used as it will use current around 23A..

Hence fuse of 23A should be used to prevent damage..