A square loop of side 5 cm enters a magnetic field with 1 cms -1 . The front edge enters the magnetic field at t = 0 then which graph best depicts emf
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
When loop is entering in the field, magnetic flux linked with the loop increases so induced emf in it
(Negative)
When loop completely enters in the field (after 
) flux linked with the loop remains constant, so 
.
After 
, loop begins to exit out, so linked magnetic flux decreases and hence induced emf 
(Positive).
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