If the reading of ammeter A1 in figure is 2.4 A .What willthe ammeters A2 and A3 read? Neglect the resistances of the ammeters.

Q. the reading of ammeter A₁ in figure is 2.4 A .What will the ammeters A₂ and A₃ read ?Neglect the resistances of the ammeters.

(a) 1.2 A , 4A

(b) 1.2 A , 3A

(c) 1.6 A , 4A

(d) 1.6 A , 3A

Ans: (c)

Sol:Let Reading of A₂ = I

P.D will be same in Parallel.

2.4 × 20 = I × 30

$ \displaystyle I = \frac{2.4 \times 20}{30} $

I = 1.6 A

Reading of A₃ = 2.4 + 1.6 = 4 A