I/GCSE / A Level

## Definition of Electrical Current $$I=\frac{Q}{t}$$

(AKA Conventional Current)

(from simple.wikipedia.org)

where

$I$ is the electrical current in amps, $A$,

$Q$ is the charge that is moving in coulombs, $C$,

and

$t$ is the time taken for the follow ot occur in seconds, $s$.

##
Diodes

(from cyberphysics.co.uk)