Home › JEE Main › Physics › Electromagnetic Induction › You slide an iron rod into the two coils along t…
You slide an iron rod into the two coils along their axis. The deflection:
AIncreases sharply
BDrops to zero
CStays the same
DChanges colour
Answer & Solution
Correct answer: A. Increases sharply
1. Iron strengthens the magnetic field inside the coils.
2. More field means more flux change.
3. The deflection increases dramatically.
_Source: NCERT Class 12 Physics Part I, Chapter 6, Electromagnetic Induction._
Related questions
The coil of an AC generator connects to the outside circuit through:A coil is labelled 2 H. The H stands for the unit called the:A magnet dropped through an aluminium pipe, compared with a PVC pipe, takes:Some trains brake with electromagnets held above the rails. The braking feels:Cutting slots in the swinging copper plate makes it:A copper plate swings between the poles of a magnet and soon stops. The cause is:A loop moves while lying fully inside a uniform magnetic field. The induced current is:Where does the work you do pushing the magnet into the coil end up?