2006
Physics
67e856d33cf20db308447ec1
An electric kettle with negligible heat capacity is rated at 2000W, if 2.0kg of water is put in it, how long will it take temperature of water to rise from 20oC to 100oC? (specific heat capacity of water = 4200J/Kg-1K-1)
A.
336s
B.
240s
C.
168s
D.
84s
Correct Answer: 336s
Explanation
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