Question on: WAEC Physics - 1990
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
Ask EduPadi AI for a detailed answer
Correct Option: C
Ivt = mcΔθ
t =
mcΔθ/Iv =
3x 4200 x (88 - 28)/6 x 200
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