If the reading of ammeter `A_(1)`in figure is 2.4 A, what will the ammeter `A_(2) and A_(3)`read? Neglect the resistances of the ammeter.

Explanation

` A_1 = 2.4A`
Since `A_1 and A_2` are in parallel
` rArr 20 xx 2.4 = 30 xx x `
` X = (20 xx 2.4 / 30) = 1.6A`
reading in ammeter `A_2` is 1.6A
` A_3 = A_1 + A_2 = 2.4 + 1.6 = 4.0 A `.