Question

an electric kettel is rated 500w ,200v .it is used to heat water for 30 sec . assumong the volatage to be 220v calculate the heat produce

Answer 1

Answer:

Power of cattle p= 500w

working v=200v

heat developed in 30s

h=pt, 500*30=15000

let delta t be rise in tamp: of water

therefor

h=m*s*delta t

15000=0.4*4200*delta t

delta t = 8.93 deg centigrade.

Answer 2

Answer:

i am even struggling on them type of questions

Explanation: