AQA A-Level Physics/List of formulas

De Broglie wavelength: ${\frac {h}{mv}}$ where h = Planck's Constant

ELECTRICITY

$I={\frac {V}{R}}$

$V={\frac {W}{Q}}$

$I={\frac {Q}{t}}$

Resistors in series

$R=R_{1}+R_{2}+R_{3}+.......$

Resistors in parallel

${\frac {1}{R}}={\frac {1}{R_{1}}}+{\frac {1}{R_{2}}}+{\frac {1}{R_{3}}}+.....$

Resistivity

$\rho ={\frac {RA}{l}}$

$P=IV={\frac {V^{2}}{R}}$

Induced EMF

$\epsilon ={\frac {E}{Q}}$

$\epsilon =I(R+r)$

Alternating current

$I_{rms}={\frac {I_{peak}}{\sqrt {2}}}$

$V_{rms}={\frac {V_{peak}}{\sqrt {2}}}$

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