If A1 = 4A, A2 = 2A and A3 = 2A, what would A4 read? if connected in parallel.
If A1, A2, and A3 are connected in parallel, then their equivalent resistance would be:
1/Req = 1/A1 + 1/A2 + 1/A3
1/Req = 1/4A + 1/2A + 1/2A
1/Req = 1/A
Therefore, A4 would also be 2A when connected in parallel with A1, A2, and A3.