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- A small bar magnet is moved through a coil at a constant speed from end to other end. Which of the following series of observations will be seen on the galvanometer G attached to the coil?
- #Electromagnetic Induction and Alternating currents
- #Engineering
- #Joint Entrance Examination Main
- #Physics
A small bar magnet is moved through a coil at a constant speed from end to other end. Which of the following series of observations will be seen on the galvanometer G attached to the coil? 
Three positions shown describe: (a) the magnet's entry (b) magnet is completely inside (c) magnet's exit
Option: 1 
Option: 2 
Option: 3 
Option: 4 
Answers (1)
When a bar magnet is entering with constant speed. flux will change and e.m.f. is induced, so the galvanometer will deflect in a positive direction.
When the magnet is completely inside, the flux will not change, so the reading of the galvanometer will be zero.
When the bar magnet is making on exit, again flux will change and on e.m.f. is induced in opposite direction to not of (a), so galvanometer will deflect in a negative direction.
So the answer is
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