JEE Main2010PhysicsElectromagnetic InductionActual
In the circuit shown below, the key K is closed at t =0 . The current through the battery is
Options
- AVR ₁ R ₂ R ₁^2+ R ₂^2 at t =0 and V R ₂ at t =
- BV R₂ at t=0 and V (R₁+R₂ ) R₁ R₂ at t=
- CV R₂ at t=0 and V R₁ R₂ R₁^2+R₂^2 at t=
- DV (R₁+R₂ ) R₁ R₂ at t=0 and V R₂ at t=
Correct answer
B. V R₂ at t=0 and V (R₁+R₂ ) R₁ R₂ at t=
Step-by-step solution
At t =0 , inductor behaves like an infinite resistance So at t=0, i= V R₂ and at t= , inductor behaves like a conducting wire i = V R _ eq = V ( R ₁+ R ₂ ) R ₁ R ₂