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Electrical Bell:
1.An electromagnet, which is made by winding insulated copper wire on a soft iron core.
2.An armature which is soft iron strip with spring.
3.A soft iron with a small hammer at one end which strikes the gong and form sound.
4.Electric circuit having of
a) Push button b) A battery of potential difference V
c) Contact adjusting screw
Working:
1.When push is pressed, the circuit is finished and the armature is attracted towards the electro magnet.
2.With forward movement of armature, the spring is detached from the screw, the circuit is detached and electromagnet is demagnetized.
The current–voltage characteristic curve for a semiconductor diode as a function of temperature T is given by the equation i = i0(eev/kt - 1) Here the ?rst symbol e represen
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Using the Maxwell's equation explain that electromagnetic waves transverse in nature.
In a vacuum tube, electrons accelerate from the cathode element to the plate element, which is maintained at a positive potential with respect to the cathode. If the plate voltage
two bodies of masses 200 g and 300 g are tied to a string which is passed over a pully.if pully has no weight and friction,then find the accerlation of the bodies and tension in th
Question: A person is putting effort to determine the characteristics of an image formed by a converging lens by means of a ray tracing diagram. The person has sketched one pri
why dark spot appears on newton''s ring?
Interconnection of cells: Cells may be connected in series, parallel or any combination of the two in order to form a battery. When cells are connected to form a battery they s
calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?
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