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QAIPMT-2011-Ph-1908: NEET 2011 Physics - Class 12 AIPMT-2011-Ph-1908 Solution: The current i in a coil varies with time as shown in the…
The current i in a coil varies with time as shown in the figure. The variation of induced emf with time would be
Multiple Choice Options
- A https://pub-09328fb7cd7b4b94aaf562e6bb66ceaf.r2.dev/photos/c2e296ba8aab35d07681f68353479af826840047d582431ee4fee1d0604cf8e1.webp
- B https://pub-09328fb7cd7b4b94aaf562e6bb66ceaf.r2.dev/photos/6a935206327ae4e1ba40afb4093dccb4c4f9b4e0a359b49f3377e711736ea352.webp
- C https://pub-09328fb7cd7b4b94aaf562e6bb66ceaf.r2.dev/photos/6e03b075eeac6e7e617c036fad3cbd122c6d497f699499fb46d9c6e5fd6b94fb.webp
- D https://pub-09328fb7cd7b4b94aaf562e6bb66ceaf.r2.dev/photos/371d912c4fcf357e7aca785c99b632875dd1cab92d9a991f2dfdaf3f52b3aa81.webp
Step-by-Step Verified Solution
e = -L d i d t
During 0 to T 4 , d i d t = constant
_ e = -ve
During T 4 to T 2 , d i d t = 0
_ e = 0
During T 2 to 3 T 4 , d i d t = 0
_ e = +ve
Thus graph given in option (a) represents the variation of induced emf with time.