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Question 20

Water of mass 1.5kg is heated from from 30oC to 80oC using an electric kettle which is rated 5A, 230V. Calculate the time taken to reach the final destination [specific heat capacity of water 4200Jkg-1K-1]

  • A.4.57 minutes
  • B.5.02 minutes
  • C.7.30 minutes
  • D.10.04 minutes
Objective

Question details

Exam body
WAEC
Subject
Physics
Year
2008
Question no.
#20
Type
Objective
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