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Joule's laws (J.P. Joule) Joule's first law The heat Q generated while a current I pass through a resistance R for a particular time t is given by following Q = I2 R
Reducing friction by an air stream Cut out a disc of cardboard about 10 cm in diameter. With a red-hot pin, burn a hole by the centre. Saw a small cotton reel in half and glue
Explain the Natural Frequencies and Resonance Standing waves occur when the waves, like those in a vibrating piece of rope, are repeating so that there are places on the rope t
Explain about the inverse piezoelectric effect. Inverse piezoelectric effect: While an alternating e.m.f is applied to the opposed faces of a quartz or tourmaline crystal th
conclution about friction is a necessary evil
At the neutral position, magnetic field because of the bar magnet is just equal and opposite to the horizontal component of earth's magnetic field.
Capacitor: A capacitor is a device used to kept charge and electrical energy. The stored electrical energy in a capacitor can be utilized according to the need. Factors on w
Imagine an elctromagnetic wave propagating vacuum with electric field Ex=10 2 sinπ(3x10 6 z - 9x10 14 t) V/m, E y =0, E z = 0. Calculate the speed, frequency, wavelength, initial
Gauss' law: The electric flux by a closed surface is proportional to the algebraic total of electric charges contained in that closed surface; in differential form, div E =
Fig- detremines a square loop Made from a uniform wire. Determine the magnetic field at the centre of the square if a battery is connected among the points A and C.
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