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  4. The variation of induced emf (e) with time (t) in a coil if a short bar magnet is moved along its axis with a constant velocity, is best represented as <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-7xw8db5zrrtf1rmn.jpg />

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Q. The variation of induced emf (e) with time (t) in a coil if a short bar magnet is moved along its axis with a constant velocity, is best represented as
Question

NTA AbhyasNTA Abhyas 2022

Solution:

Polarity of emf will be opposite in the two cases while entering and while leaving the coil. Only in this option polarity is changing. Hence, the correct option is
Solution