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QAIPM-2001-Ph-2914: NEET 2001 Physics - Class 12 AIPM-2001-Ph-2914 Solution: For a coil having L = 2 mH, current flow through it is…
For a coil having L = 2 mH, current flow through it is then, the time at which emf become zero
Multiple Choice Options
- A 2 sec
- B 1 sec
- C 4 sec
- D 3 sec
Step-by-Step Verified Solution
Given, I = t 2 e _ t
So, d I d t = 2 t e _ t _ t 2 e _ t
| _ | = L d I d t
here emf is zero when d I d t = 0
_ 2 t e _ t _ t 2 e _ t = 0
_ 2 t e _ t = t 2 e _ t
_ t e _ t ( t _ 2 ) = 0
As t � � , t � 0
_ t = 2 sec