sugest methods to make the deflection of the needle in opposition direction
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Answer:
If you hold a compass near a wire through which current is flowing, the needle on the compass will be deflected. ... The magnetic field produced by an electric current is always oriented perpendicular to the direction of the current flow.
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Explanation:
ANSWER
When the coil is moved towards a stationary magnet, the magnetic field associated with the coil will change and so current will be induced in the coil. This will cause galvanometer to show deflection in one direction. Now,when the coil is moved away, the magnetic field will decrease and hence, current will be induced in the opposite direction causing the galvanometer to show opposite deflection. The phenomenon is called electromagnetic induction.
The deflection of the magnetic needle in the galvanoscope connected to the stationary circular coil AB increases if The velocity of the magnet is increased,The number of turns in the coil is increased
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