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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.
Sclera: It is an outer most, thick, impermeable to light. It is more convex and it's front part is transparent is known as Cornea.
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Electrostatic Induction: Electrostatic Induction is the process in which a charged object charges another neutral object without touching it.
Is a sewing needle magnetic or non magnetic? Answer:- When you purchase it in the store it isn't magnetized but if you rub it with a magnet it becomes magnetic.
TEMPERATURE: When the conduction electrons are only scattered by thermal vibrations of thermal ions, then τ in the mobility expression refers to the mean time between scatterin
Ask question #Minimum 100 words how is temperature coefficient of resistance helpful to mankind?accepted#
Mosley studied the characteristic X-ray spectrum of a number of a heavy elements and concluded that the spectra of dissimilar elements are very same and with enhancing atomic value
Erika is on an elevator and presses the button to go down. When the elevator first begins moving, it has an acceleration of 2.5 m/s 2 downward. Erika and the elevator have
Ques: Point out the direction of the current if any induced to flow in the loop by the changing magnetic field. (Describe is the loop as viewed from above.) Answer:
contruction
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