Question

Find the readings of ammeters A1 and A2 in the figure shown below. All resistors are 2.16 Ω. (Take emf = 10.2 V.)

Ai

The Correct Answers are:

Anmeter A1 = 2.83Amps

Anmeter A2 = 0.944 Amps

Answer 1

R1 and R2 (in series) and A2 (top of diamond) are in parallel with R3 and R4 (in series)(bottom of diamond) These are in parallel with R5 and R6 (the L shape) then all are in series with R7 V = 10.2
2.16 + 2.16 = 4.32
total resistance = 2.16 + 1/(1/4.32 + 1/4.32 + 1/4.32) = 3.6 ohms
A1 reads 10.2/ 3.6 = 2.83 A
A2 reads A1/3 = 0.944 A