COMEDK2015PhysicsElectromagnetic Induction
A bicycle generator crcates 1.5 ~V at 15 ~km / h . The cmf generated at 10 ~km / h is
Options
- A1.5 ~V
- B2 ~V
- C0.5 ~V
- D1 ~V
Correct answer
D. 1 ~V
Step-by-step solution
Initial speed of bicycle, v₁=15 ~km / h Emf produced, e₁=15 ~V Final speed of bicycle, v₂=10 ~km / h If emf generated at speed v₂ be e₂ , then array ll & e=B v l & e v & e₂ e₁ = v₂ v₁ = 10 15 & e₂ e₁ = 2 3 e₂= 2 3 e₁= 2 3 15=1 ~V array