ELECTROMAGNETIC (ELECTRIC) BELL X (Science)

PRINCIPLE:

Agar ek U-shaped core pe wound hui coil ko agar me kisi Voltage source se jorr dun to woh U-Shaped Magnet ki tarhan behave kare gi.

The reason for this act is : 

Current entering the left core has a clockwise direction (see in the fig.) and Current entering the left core has a anticlockwise direction (see in the fig.)

Agar right hand rule aap ko yaad ho to , according to that "grip from the curl of figures in the direction of current" - Aap ka thumb north ki taraf point kare ga !

(verify both the bar of the core with ur hand and then proceed on; see how one end became NORTH and other SOUTH)

CONSTRUCTION:

• U shaped Electomagnet
• Armature
• Screw join
• Voltage source
• Switch
• Gong

MECHANISM OF WORKING:

1.     Click the link to view the flash animation ; to understand the working efficiently: http://www.footprints-science.co.uk/flash/electricbell.swf

2.     Jub aap swithch ko ON karenge, to battery se current electromagnet me jae ga.

3.     Jub current electomagent me se pass hoga to woh Armature coil ko apni taraf attract karega.

4.     Armature k uper jane se; Hammer (jo k armeture se attach he) Gong pe ja kar strike hoga, Aur sound produce hoga : TANNNNG……

5.     Jese hi Armature uper electromagnet se touch hoga, (See in the animation) Screw-join Armature se disjoint ho jae ga.

6.     Iss condition me Circuit will be opened. Battery will stop sending current (q ki aage rasta nahi hai ; samajh lo jese 2 roads ko connect karne wala bridge toot gaya hai)

7.     Since Current is not fllowing though the electomagent as well, Ab woh Electromagnet apni mgnetic properties show nahi kare ga (Ek simple iron piece ki tarha behave kare ga)

8.     q ki ab electromagnet is not in function, no attraction towards Armature.

9.     Electromagnet se attach hua Armature, magnetism na hone ki wajah se, wapis apni position pe chala jae ga (using gravity, but practically spring is used).

10. When armature is restored to its initial position, ab woh wapis screw-join se touch ho jaega. (see animation)

11. jiss ki wajah se Circuit phir se complete (Close) ho jae ga.

12. Yani phir se Electromagnetic zinda hojae ga !

13. Yani phir se armature electromagent se attract hoga ; 

14. Hammer , gong se hit hoga ; Sound will be produced ! TANNNNG…

15.  In this trend bell will function to perform ringing sound !

TANNNNG… TANNNNG… TANNNNG… TANNNNG… TANNNNG… 

Any Queries ????