AQA A LEVEL PHYSICS Exam Questions With Correct Answers
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Course
AQA A Level Physics Mechanics
Institution
AQA A Level Physics Mechanics
AQA A LEVEL PHYSICS Exam Questions
With Correct Answers
Electromotive force (emf) - answerAmount of electrical energy produced by a battery/source
per 1C of charge
Power - answerRate of transfer of electrical energy to a component per second
Resistance - answerPotential difference divided by t...
Critical temperature - answer✔The temperature that below which a superconductor has no
resistance and very large currents can pass through with very small voltage/very small energy
losses
Internal resistance - answer✔An electrical source or cell's opposition to the flow of charge
through it, defined as the loss of pd per 1A current when a current passes through the source/cell
Isotopes - answer✔Nuclei with the name number of protons but different number of neutrons
Pair production - answer✔When a particle and its corresponding anti-particle are produced from
a photon with energy greater than the total rest energy of the 2 particles
Annihilation - answer✔When a particle and its corresponding anti-particle collide they annihilate
converted their kinetic energy and rest energies into 2 high energy photons(E=hf)
Moment - answer✔Force multiplied by perpendicular distance between force and the pivot
Principle of moments - answer✔For an object to be in equilibrium the sum of the anticlockwise
moments is equal to the sum of the clockwise moments (no turning moment)
An object is in equilibrium if - answer✔-Sum of anticlockwise moments=sum of clockwise
moments
-All vertical forces cancel and all horizontal forces cancel
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