It would be nice to have some slightly more challenging calculations, as all of these just lead you to efficiency - GCSE exsam questions will, sometimes, ask you to use a given efficiency to work backwards to the total energy input, or the useful output. But a good starter resource, thank you.
Posted on 15th October 2017
Used with an SEN class and it was visual, clear and loads of examples to help understand.
Posted on 5th February 2015
Really useful, helped a lot thank you so much
Posted on 5th October 2014
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