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Physics 2 · Reference

Equation index

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On this page 3 sections
  1. In 30 seconds
  2. The college version
  3. Study tools

In 30 seconds

Key equations organized by topic. See individual topic files for full context. This page lists the Physics 2 equations.

The college version

Topic 10 — Electrostatics

EquationName
(F = kq_1q_2/r^2)Coulomb's law
E = F/q0Electric field
∮E · dA = qenc/ε0Gauss's law
ΔV = -∫E · dsPotential difference
V = kq/rPoint charge potential

Topic 11 — Capacitance and DC Circuits

EquationName
C = Q/VCapacitance
U = 12CV2Capacitor energy
V = IROhm's law
P = IVElectric power
τ= RCRC time constant

Topic 12 — Magnetism

EquationName
F = qv × BMagnetic force on charge
r = mv/(qB)Cyclotron radius
∮B · ds = μ0 IencAmpère's law
B = μ0 I/(2πr)Straight wire field

Topic 13 — Induction and AC

EquationName
E = -N dΦB/dtFaraday's law
XC = 1/(ωC)Capacitive reactance
XL = ωLInductive reactance
ω0 = 1/LCResonant frequency

Topic 14 — Electromagnetic Waves

EquationName
c = 1/μ0ε0Speed of light
c = fλWave equation
Ephoton = hfPhoton energy
S = E × B/μ0Poynting vector

Topic 15 — Optics

EquationName
n1sinθ1 = n2sinθ2Snell's law
1/f = 1/do + 1/diLens/mirror equation
dsinθ= mλDouble-slit bright fringes
I = I0cos2θMalus's law

Topic 16 — Modern Physics

EquationName
Δt = γΔt0Time dilation
E = mc2Mass-energy equivalence
Kmax = hf - φPhotoelectric effect
λ= h/pde Broglie wavelength
N(t) = N0 e-λtRadioactive decay

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