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.

by | Jan 23 | Physics WAEC | 0 comments

A. 2A
B. 3A
C. 5A
D. 8A

Correct Answer: Option B

B. 3A

Explanation

Ammeters are connected in series so,

A3= A2 + A1

A1 = A3 – A1

= 5A – 2A

= 3A

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