KCET2010PhysicsCurrent Electricity
Three voltmeters A, B and C having resistances R, 1.5 R and 3 R respectively are used in a circuit as shown. When a potential difference is applied between X and Y , the readings of the voltmeters are V₁, V₂ , and V₃ respectively. Then
Options
- AV ₁= V ₂= V ₃
- BV ₁ < V ₂= V ₃
- CV ₁> V ₂> V ₃
- DV₁>V₂=V₃
Correct answer
A. V ₁= V ₂= V ₃
Step-by-step solution
array lc Here, & V ₂= V ₃ ie, & i ₂ 1.5 R =3 R i ₃ and & i ₂+ i ₃= i & i ₂= 2 i 3 and i ₃= i 3 Now, & V ₁= IR & V ₂= 2 i 3 1.5 R = iR ie, & V ₃= i 3 3 R = iR array