JIPMER2010PhysicsElectromagnetic Induction
In 0.1 s , the current in a coil increases from 1 A to 1.5A. If inductance of coil is 60 mH , then induced current in external resistance of 3 will be
Options
- A1A
- B0.5A
- C0.2A
- D0.1A
Correct answer
D. 0.1A
Step-by-step solution
Induced emf, aligned |e|=L d i d t & = (60 10⁻³ ) (1.5-1) 0.1 & = 60 10⁻³ 0.5 0.1 =0.3 ~V aligned Induced current, i= e R = 0.3 3 =0.1 ~A