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Question 40

Calculate the time taken to heat 2kg of water from 50°C to 100°C in an electric kettle taking 5A, from a 210V supply. (Specific heat capacity of water = 4200\(kg^{-1}K{-1}\)

  • A.2.5 minutes
  • B.5.7 minutes
  • C.6.7 minutes
  • D.7.5 minutes
  • E.9.5 minutes
Objective

Question details

Exam body
WAEC
Subject
Physics
Year
1994
Question no.
#40
Type
Objective
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