A-LevelPhysicsPhysical quantities and units9702/12 · May/June 2014 · Q11 Mark

The maximum theoretical power P of a wind turbine is given by the equation P = kpAvⁿ where ρ is the density of air, A is the area swept by the turbine blades, v is the speed of the air and k is a constant with no units. What is the value of n?

✓ Correct answer

C: 3

Oracle Prep sorts past-paper questions by topic, so you can drill Physical quantities and units and see which topics are most likely to come up next.

Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2014 Paper 1 Variant 2, question 1.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

A person calculates the potential difference across a wire by using the measurements shown. Which measured quantity h…

At temperatures close to 0 K, the specific heat capacity c of a particular solid is given by c = bT³, where T is the …

Four students measure a time interval that is known to be 1.734 s. The measurement recorded by each student is shown.…

A progressive wave is incident normally on a flat reflector. The reflected wave overlaps with the incident wave and a…

In an experiment to demonstrate two-source interference of light, a beam of light is split into two beams using two s…

An electric current I is given in the list of formulae on page 3 as I = Anvq. What do each of the symbols represent f…