Can you show your working please?
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I understand that after shorting the voltage source, the resistance and voltage should be 0 and current through the wire should be 2 amps or less. However I only know that short circuiting means the current will travel on that wire and skip resistors on the way. This is why I thought that there must be 0 amps running through R2 but in this case all wires and components have current. Do you have videos and any websites I can use to solve?
LTSpice computes I (R2) = 0.303 A, for Vs = 13V, for the circuit shown below:
However I only know that short circuiting means the current will travel on that wire and skip resistors on the way.
I don't think this is a useful way of thinking about the problem. Do the algebra instead. If this is homework, presumably you have to show your work.
What's mean "2A" note near the ampermeter on the schematic?
2A == constant current, sourcing current following the arrow
That symbol stands for an ideal current source, not an Ampere meter.
Here are the two circuits to solve, using the superposition principle. Really, it is just a few lines of algebra in each case!
or redrawing the above
Thank you, my lecturer also hinted that the right redraw is the key to everything. I just have to keep learning, asking and figuring.