Cambridge IGCSE PhysicsA3 Symbols, units and multipliers Checklist
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What's on this checklist
Core
- I can use the multipliers M (mega), k (kilo), c (centi) and m (milli).
- Length: symbols l, h, d, s, x; units km, m, cm, mm
- Area: symbol A; units m², cm²
- Volume: symbol V; units m³, cm³, dm³
- Weight: symbol W; unit N
- Mass: symbols m, M; units kg, g
- Time: symbol t; units h, min, s
- Density: symbol ρ; units g / cm³, kg / m³
- Speed: symbols u, v; units km / h, m / s, cm / s
- Acceleration: symbol a; unit m / s²
- Acceleration of free fall: symbol g; unit m / s²
- Force: symbol F; unit N
- Gravitational field strength: symbol g; unit N / kg
- Moment of a force: unit N m
- Work done: symbol W; units J, kJ, MJ
- Energy: symbol E; units J, kJ, MJ, kW h
- Power: symbol P; units W, kW, MW
- Pressure: symbol p; units N / m², N / cm²
- Temperature: symbols θ, T; units °C, K
- Frequency: symbol f; units Hz, kHz
- Wavelength: symbol λ; units m, cm
- Focal length: symbol f; units m, cm
- Angle of incidence: symbol i; unit degree (°)
- Angle of reflection: symbol r; unit degree (°)
- Angle of refraction: symbol r; unit degree (°)
- Critical angle: symbol c; unit degree (°)
- Potential difference / voltage: symbol V; units V, mV, kV
- Current: symbol I; units A, mA
- e.m.f.: symbol E; unit V
- Resistance: symbol R; unit Ω
- Count rate: units counts / s, counts / min
- Half-life: units s, min, h, days, weeks, years
Extended
- I can use the multipliers G (giga), µ (micro) and n (nano).
- Mass: symbols m, M; unit mg
- Time: symbol t; units ms, µs
- Spring constant: symbol k; units N / m, N / cm
- Momentum: symbol p; unit kg m / s
- Impulse: unit N s
- Pressure: symbol p; unit Pa
- Specific heat capacity: symbol c; units J / (g °C), J / (kg °C)
- Wavelength: symbol λ; unit nm
- Refractive index: symbol n
- Charge: symbol Q; unit C
- Hubble constant: symbol H₀; unit s⁻¹