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Electromagnetism:
A temporary magnet formed by winding a coil of insulated copper wire around a piece of shift iron is known as electromagnet. When current is passed it behaves as magnet.
Uses:
Electromagnets are used in electric bells, loud speaker, telephone receiver, televisions, radio sets, motors, dynamos and generators.
What components/materials are chosen because of their especially high resistivity and explain why high resistivity
Ask question #Minimum 100 words accepteThe centre of oscillation of a meter stick suspended about a transverse axis is located at the 15 cm mark. Determine at what other positions
What is the difference among Free Electron Theory and Band Theory of solids? Free Electron Theory: This theory says that, metals conduct electricity due to the presence of
INELASTIC COLLISION: "The collision in which total momentum is preserved but total K.E of system is not conserved is known as inelastic collision". It is to be noted that m
Q State Lenz's law. Lenz's law declares that the induced current produced in a circuit always flows in such a direction that it opposes the change or cause that produces it.
what is gravitational law
Rydberg constant (Rydberg): A constant that governs the relationship of the spectral line features of an atom by the Rydberg formula. For hydrogen, it is about 1.097 x 10 7 m
a jet of engine on a test tube takes in 20kg of air per second at a velocity of 100m/s and burns 0.8kg of fuel per second.after compression and heating the exhaut gases are ejected
Reverse Characteristic of a Zener diode Reset voltage to zero. Connect zener diode as shown in fig. and reverse characteristics are demonstrated in fig. Raise voltag
give me experiment on this topic
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