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Northern IrelandCombined ScienceQuick questions
P1 Motion, Force, Energy, Density, Kinetic Theory and Radioactivity
Quick questions on Work, power and efficiency - CCEA GCSE Double Award Science
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is efficiency over 100 percent?Show answer
Efficiency can never exceed 100 percent; if you get more than 1, you have swapped useful and total.
What is q1?Show answer
State the equation for power and its unit. [2 marks]
What is q2?Show answer
A crane does of work in . Find its power. [2 marks]
What is q3?Show answer
A motor takes in and transfers usefully. Find its efficiency. [2 marks]
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