AP EAMCET2015PhysicsElectromagnetic Induction
The magnitude of the induced emf in a coil of inductance 30 mH in which the current changes from 6 ~A to 2 ~A in 2 s is
Options
- A0.06 V
- B0.6 V
- C1.06 V
- D6 V
Correct answer
A. 0.06 V
Step-by-step solution
aligned & e=-L d l d t e=-30 10⁻³ ( 2-6 2 ) & =+30 10⁻³ 4 2 =+0.06 ~V aligned