If anyone could answer these questions, it'd be great
What's the difference between current and charge?
Which way does the charge flow?
Which way does the current flow?
What's the difference between parallel and series circuits?
charge is a property representing the flow of electrons, current is one unit of charge (si unit = coulombs) per unit of time (second), so it is q s-1, or amperes, a. This is because charge and current are unified by:
charge is the flow of electrons, so it flows from the negative terminal to the positive terminal.
Conventional current flows from the positive terminal to the negative terminal.
In series circuits, components are connected to each other by a wire. In parallel circuits, components are connected by wires which connect to the existing wire (which is in series) as so - left = parallel, right = series:
- current is equal everywhere
- total voltage / p.d. is the sum of all other p.d.s of components
- total resistance is the sum of all other resistances of components
- current is the total sum of all components
- voltage / p.d. is equal for all components
- resistance is the reciprocal sum of all other resistances
(you don't need to know this one for GCSE)[/QUOTE
Well, Mr, you've just saved my life
My physics teacher is absolutely crap plus i've not done anything properly on circuits in KS3 either so literally this could be the jump from one grade to another.