How long will it take to heat 3 kg of water from 28oC to 88oC…

How long will it take to heat 3 kg of water from 28oC to 88oC in an electric taking a current of 6 A from an e.m.f. source of 220V?
  • A.
    96s
  • B.
    1.20s
  • C.
    570s
  • D.
    600s
  • E.
    1200s
Correct Answer: Option C
Explanation

Ivt = mcΔθ

t =

mcΔθ/Iv

=

3x 4200 x (88 – 28)/6 x 200
You May Also Like