Electromagnetic Induction and Alternating Current 1 Question 7
7. 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
(2004, 2M)
(a)
(b)
(c)
(d)
Show Answer
Answer:
Correct Answer: 7. (b)
Solution:
- Polarity of emf will be opposite in the two cases while entering and while leaving the coil. Only in option (b) polarity is changing.
