Anyway, as part of our first assignment, we need to work out expected currents in ammeters, and potential differences across resistors. I can't attach a drawing for this, but will attempt to explain.

I won't use the figures I have, as I'd like advice on the equations and mathematics that I need so that I can walk through it with my figures after.

We have a DC battery (12V) going to R1 (100 Ohms). This then goes to three parallel resistors, R2-R4 (120 Ohms, 90 Ohms and 160 Ohms respectively). These then all lead to R5 (210 Ohms).

The Ammeters are positioned at R1, R2, R3, and R4.

There's another one that's a bit more complicated, but hopefully with some easy to understand advice on this one, I should be able to figure that one out.

Anyway, any help would be greatly appreciated, and anyone who is able to explain this to me will forever go down as an absolute legend.

Thanks in advance.