BasicofElectromagneticInduction

BasicofElectromagneticInduction - ELECTROMAGNETIC INDUCTION...

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ELECTROMAGNETIC INDUCTION
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ELECTROMAGNETIC INDUCTION Experiment: An insulated copper wire is wound in form of a spiral on a wooden cylinder to form a coil in the form of a solenoid. Connect the two ends of the solenoid to a galvanometer G Place a magnet along the axis of solenoid with North pole facing the solenoid.
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ELECTROMAGNETIC INDUCTION When the magnet is stationary, there is no deflection in the galvanometer. The pointer reads zero.
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ELECTROMAGNETIC INDUCTION The magnet with north pole facing the coil is now moved towards the solenoid The galvanometer shows a deflection towards the right This means that a current flows in the solenoid in direction as shown in the figure below
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ELECTROMAGNETIC INDUCTION As soon as the movement of magnet towards the solenoid stops, the pointer of the galvanometer comes to the zero position. This can only mean that the current in the solenoid flows only as long as there was a movement of the magnet.
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