Time to boil a water kettle

  • Thread starter pixel01
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Main Question or Discussion Point

My friend asks me this question, I have not worked it out.
I hope it is suitable to maths box .

The time to boil a small kettle of water using a electric coil is A minutes.
Q: How many minutes needed to boil a big kettle (two times the mass of water compared to the small kettle), if using the same coil. Consider no heat is transmitted away to the ambient.
 

Answers and Replies

  • #2
marcusl
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It is 2A
 
  • #3
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Is it the same metal kettle the entire time?

If so, then the answer is 2A.

Also, this would be a better fit in the general physics forum than in general math.
 
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