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FACTORS AFFECTING INDUCED EMF
By experiment, the following factors may be noted:• The faster the magnet (or coil) is moved, the greater is the deflection obtained on the meter. This shows that the magnitude of the emf is proportional to the rate of relative movement.• Repeating the experiment using a stronger magnet results in greater meter deflection for the same rates of movement. Hence the magnitude of the emf is proportional to the flux density.• Reversal of the direction of motion produces meter deflecting in the opposite sense. The direction of the induced emf therefore depends on the direction of motion.• Using the south pole of the magnet instead of the north results in meter deflections in the opposite sense, showing that the direction of the induced emf depends upon the direction of the magnetic field.• If more turns are used on the coil, meter deflection is greater and is proportional to the number of turns (N).
A ball moving with speed v collides with a horizontal smooth surface at an angle ? with normal to surface in the figure. If coefficient of restitution is ‘e’ , then find VELOCITY a
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Vince is determined to test law of gravity for himself walks a skyscraper 900ft. with zero initial velocity.Five seconds later, superman arrives at the scene and drive off the roof
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The set of rectangular axes obeying the Newton's laws of motion and used to describe the position of a particle or an event are known as inertial frames of reference.
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why it is not possible to charge one object by rubbing without charging another object by rubbing
A customer requested the design of a Heat Exchanger and provided the following information to the Engineering Department. In his factory, as part of the process upgrade, there is a
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