The circuit contains three ammeters A1, A2 and A3 with readings of A2 and A3 shown as indicated in the diagram. Determine the reading of A1.
Attached Figure / Diagram
A
2A
B
3A
C
5A
D
8A
Verified Correct Answer: B.
Physical Principles & Numerical Solution
Ammeters are connected in series so,
A3= A2 + A1
A1 = A3 - A1
= 5A - 2A
= 3A
Source: Myschool Past Questions Archive (Record #49857)