Manipal MET2010PhysicsElectromagnetic Induction
A disc of radius 0.1 m is rotating with a frequency 10 rev / s in a normal magnetic field of strength 0.1 T . Net induced emf is
Options
- A2 10⁻² V
- B10⁻² ~V
- C2 10⁻² ~V
- DNone of these
Correct answer
B. 10⁻² ~V
Step-by-step solution
Net induced emf due to disc is aligned & = 1 2 B l^2 & = 1 2 0.1 2 10 0.1 0.1 & = 10⁻² ~V aligned