Question

Can you help me with this?

Answer 1

Here's yer question



I'd earth it at B and then you can put in the voltages around the circuit, including unknown voltage V at A

then apply conservation of charge and Ohm's Law

So

\((4-V)4 = (V-2)(4) + (V-4)(4)\)



@Radar is the user to tag on all this stuff if you're going to be doing a lot of it

Answer 2

soz, that's just a steer on a) but it breaks the back of the problem :-)

Answer 3

Another way, is to redraw the circuit and simplify it like so