Use of Electro Magnet Electric bell
Use of Electromagnet Electric bell
Electromagnet
It is a magnet made by using electric current. An electromagnet works on the magnetic effect of current.
Use of electromagnet:
Electric Bell:
An electric bell has an electromagnet that pulls a strip of iron which makes the hammer hit the gong to ring the bell.
Construction :
The electric bell has a U shaped electromagnet. There is a small iron bar called armature which is held in front of the poles of the electromagnet.The lower end of iron bar is attached to a flat spring and the flat spring is itself fixed to a metal bracket. The upper end of iron bar has a clapper attach to it. A metal gong is fixed near the clapper.
Working :
Step 1 . When you push the switch of the bell, an electric current flows through the electromagnet.
Step 2 . The electromagnet attracts the soft iron strip. The hammer attached to the strip then hits the gong, making it ring.
The electromagnet attracts the___________iron strip. | |||
| Right Option : B | |||
| View Explanation | |||
Electromagnet are also used loading furnaces with______________. | |||
| Right Option : B | |||
| View Explanation | |||
In electric bell which effect of current is used? | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [20]
Abhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
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8thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
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