Question 10
Question 10 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
1. Motion, forces and ene...
1.7.1. Energy

Know the principle of the conservation of energy and apply this principle to complex examples involving multiple stages, including the interpretation of Sankey diagrams

1. Motion, forces and ene...
1.7.3. Energy resources

Define efficiency as: (a) (useful energy output / total energy input) × 100% (b) (useful power output / total power input) × 100% recall and use these equations