PAPER 1: PHYSICS IN CONTEXT (MEASUREMENT, PARTICLES & WAVES)
(Foundations of Physics – Core Principles)
Qualification: A Level Physics (AQA Specification)
Paper Code: 7408/1
Topic Areas: Measurements, Particles, Waves & Mechanics
Date: __________________________
Time: __________________________
Duration: 2 Hours
Total Marks: 85
INSTRUCTIONS TO CANDIDATES
Answer ALL questions.
Show all working clearly; final answers must include correct units.
Use appropriate significant figures.
Draw diagrams where required and label clearly.
A Formula Booklet is provided.
Use of a scientific calculator is permitted.
CANDIDATE DETAILS
,Full Name: ____________________________________________
Candidate Number: _____________________________________
Centre Number: ________________________________________
Signature: ____________________________________________
FOR EXAMINER’S USE ONLY
Question Marks Available Marks Awarded
1
2
3
…
Total 85
Current
Rate of flow of charge
Coulomb
The amount of charge passing a point when a current of 1A flows for 1s
, Potential difference
The work done per unit charge in moving a small point positive charge between two points
Threshold Voltage for a Diode
The voltage at which a current will begin to flow at, assumed to be +0.6V if not stated
Reverse Bias
When very little currency can flow in the reverse direction of a diode
Variable Resistor
Can be used to change the current through a circuit can also be called a rheostat
NTC Thermistor
(A type of semiconductor) that has decreasing resistance when its temperature increases -
negative temperature coefficient
Transitional Temperature
The critical temperature at and below which a superconductor has zero resistivity