Please see the edit.
A source is coupled to a diff-amplifier circuit as sown below:
The 10k R1 provides a path for base currents to return.
But Im confused about the loop taken by ib2.
For ib1 I can say it loops through A-->B-->C(GND)-->D-->E--F
Is this loop for ib1 correct?
Im confused about ib2's track
Does ib2 loop through F-->G-->C(GND)-->D-->E-->F
But this doesn't make sense because current cannot loop back to the same terminal.
I put those capital letters for nodes as A, B, C ect.
What is the correct track for ib2?
Let me ask this way:
In the above conceptual schematics Rb providing return path.
What are the loops for the input bias currents in terms of nodes for ib1 and ib2? I named all nodes with capital letters. An answer would be like A-->B--> ect. easy to demonstrate.