> [!INFO] What's this?
> This is (or will be) an annotated version of the formula book we're given in the exam. It will be the same formulas, but with links to relevant notes on each formula
## Electrical Current
$
I = \frac{Q}{t}
$
![[Foundation Year/Electricity & Electronics/Circuit Theory (1)#Current]]
---
$
I = nAve \qquad J = \frac{I}{A}
$
> [!WARNING] TODO
> Above formula have not been covered yet
## Resistance
$
R = \frac{V}{I}
$
![[Foundation Year/Electricity & Electronics/Circuit Theory (2)#Ohm's Law]]
![[Foundation Year/Electricity & Electronics/Circuit Theory (1)#Resistance]]
---
$
R_s = R_1 + R_2 + R_3
$
![[Foundation Year/Electricity & Electronics/Circuit Theory (2)#Resistors in Series]]
---
$
\frac{1}{R_p} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3} \qquad R_p = \frac{R_1 \times R_2}{R_1 + R_2}
$
![[Foundation Year/Electricity & Electronics/Circuit Theory (2)#Resistors in Parallel]]
---
$
R = \frac{\rho \ell}{a}
$
> [!WARNING] TODO
> Above formula have not been covered yet
## Power & Energy
$
P = V \times I \qquad P = I^2 \times R \qquad P = \frac{V^2}{R}
$
![[Foundation Year/Electricity & Electronics/Circuit Theory (1)#Power]]
---
$
W = V \times I \times t
$
![[Foundation Year/Electricity & Electronics/Circuit Theory (1)#Energy]]
## Electrical Circuits
$
V=E-Ir
$
![[Foundation Year/Electricity & Electronics/Circuit Theory (3)#Terminal Voltage]]
***