AIPMT PRELIMS2001Physics-Electromagnetism
AIPMT PRELIMS 2001 Physics Inductance MCQ Question
Type: MCQ-numerical-Hard-Class 12
For a coil having L = 2 mh, current flow through it is I = t² e⁻ᵗ then the time at which emf become zero :-
A
2 s
B
1 s
C
4 s
D
3 s
Correct Answer
Option A
Detailed Explanation
The emf is zero when dI/dt = 0. Solving d(t² e⁻ᵗ)/dt = 0 gives t = 2 s.
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