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Q. What is action of points (corona discharge)? What is its use?
The seep out of electric charges from the sharp points on the charged conductor is known as action of points or corona discharge. This principle is utilized in the electrostatic machines for collecting charges and in lightning arresters (conductors).
When a driver brakes an automobile, the friction between the brake drums and the brake shoes converts the car's kinetic energy to thermal energy. If a 1800 kg automobile traveling
Visible Radiation (Waves): Visible waves have a wavelength range among 400 and 700 nanometre.
Magnetic instruments are used to find out the magnetic moment of a bar magnet, find out the horizontal component of earth's magnetic field, compare the magnetic moments of two bar
Find the current flowing in the 5Ω resistor of the circuit shown in Figure using (a) Kirchhoff's laws, (b) the superposition theorem, (c) Thévenin's theorem, (d) Norto
contact ball whit wall box
MOTION: A body is said to be in motion if it alters its position with respect to its surroundings.
Friction has several disadvantages but life is impossible without friction because friction has many benefits also.
It takes 46.0 J to raise the temperature of an 10.1 g piece of unknown substance from 13.0 o Cto 40.1 o C. What is the specific heat for the substance?
properties of low and high resistive materials
Three impedances are connected in series across a 100V, 2kHz supply. The impedances comprise: (i) An inductance of 0.45mH and 2 resistance, (ii) An inductance of 570µH a
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