As performed in the real lab:
Magnetic bar, a galvanometer, coil and connecting wires.
- Take a coil of wire having a large number of turns.
- Connect the end of the coil to a galvanometer.
- Take a strong bar magnet and move its north pole into the coil and observe the changes in the galvanometer needle.
- Repeat earlier step with the south pole of the bar magnet.
- Now repeat the procedure with the coil having a different number of turns and the variation in the deflection of the galvanometer needle.
As performed in the simulator:
- Click on any one magnet from Bar magnets section.
- Drag the bar magnet in/out of the Coil and observe the deflection of needle in the Galvanometer.
- Repeat the same procedure for other bar magnet.
- For each magnet, observe the direction of deflection and change in deflection when we move magnet in/out with varying speeds.
- Click on Next to continue.
- Again, click on any one magnet from Bar magnets section.
- From the Number of turns section select the number of turns in the coil.
- Drag the bar magnet in/out of the coil and observe the change in deflection for different number of turns in Coil.
- Repeat procedure for all options in Number of turns. After this Observations & Inference will be displayed.
- Note the observations and inference.
Observations & Inference:
- When we move the magnet in or out of the coil, the needle of galvanometer gets deflected in different directions.
- When we insert the north pole (N) of bar magnet into the coil, the needle gets deflected in negative direction.
- When we insert the south pole (S) of bar magnet into the coil, the needle gets deflected in positive direction.
- When we move the bar magnet in or out of the coil with varying speed, the speed of deflection changes accordingly.
- As we increase the number of turns in the coil, the deflection increases.
- The deflection of galvanometer needle indicates the presence of current in the coil.
- The direction of deflection gives the direction of flow of current.
- The speed of deflection gives the rate at which the current is induced.
- The deflection in galvanometer changes with the change in number of turns in the coil - more the number of turns in the coil greater is the deflection.