. In Faraday's experiment on electromagnetic induction, more deflection will be shown by galvanometer, when : (a) magnet is in uniform motion towards the coil (b) magnet is in uniform motion away from the coil se (c) coil is in uniform motion wit. the magnet (d) magnet is in accelerated motion towards the coil.
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Ans:a)magnet is in uniform motion towards the coil
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In Faraday's experiment on electromagnetic induction, more deflection will be shown by the galvanometer when the magnet is in accelerated motion towards the coil. Therefore, the correct option is option (d).
- According to the principle of electromagnetic induction, when a conductor, such as a coil of wire, is moved through a magnetic field, an electric current gets induced in the conductor. The strength of the induced current depends on several factors such as the strength of the magnetic field, the speed of the coil and the magnet, and the orientation of the magnet with respect to the coil.
- When the magnet is in uniform motion towards or away from the coil, the number of magnetic field lines passing through the coil is constant, and the induced current is also constant. Therefore, the deflection shown by the galvanometer is also constant.
- When the coil is in uniform motion with the magnet, there is no relative motion between the magnetic field and the coil, and hence no current is induced in the coil. Therefore, the galvanometer will not show any deflection.
- When the magnet is in accelerated motion towards the coil, the number of magnetic field lines passing through the coil increases rapidly, inducing a stronger current in the coil. This results in a greater deflection of the galvanometer.
Therefore, the correct option is option (d).
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