StructuredPast exam questionForm 3 · JCE
The diagram below shows an electric kettle with the body made of metal, filled with water.
- aExplain why the heating element is placed near the base of the kettle. [2]
- bThe heating element has a power rating of 2500 W. Explain this statement in terms of energy. [1]
- cThe cost of 1 unit of electrical energy (1 kWh) is P0.60. Calculate the cost of using the kettle for 15 hours. [3]
- dSuggest an improvement that can be made to the kettle to reduce heat loss. [1]
- eState any two methods of heat transfer. [2]
You'll mark your own answer against the marking guide when you hand it in.
Source: BEC JCE Science 2014, Paper 2, Question 3
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