An ammeter has resistance R 0 and range i . What resistance should be connected in parallel with it to increase its range by n i ?

Step-by-step solution

Given, i ⁡ g ⁡ = i ⁡ ,  G ⁡ = R ⁡ 0 ; i 1 = n ⁡ i + i ⁡ = n ⁡ + 1 i ⁡ ∴ S ⁡ = i ⁡ g ⁡ G ⁡ i 1 ⁡ - i ⁡ g ⁡ = i ⁡ R ⁡ 0 n ⁡ + 1 i ⁡ - i ⁡ = R ⁡ 0 n ⁡