Explain why the deflection occurs in the galvanometer.

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Solution

This is based on Lenz's law.
consider a single coil to understand clearly.
when N pole move left ,line of force through increases.
ring has induced current to minimise this change i.e, induced current in the loop is Anti-clockwise.
similar situation occur in this problem where no. of rings is moved.

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Explain why the deflection occurs in the galvanometer.

This is based on Lenz's law.consider a single coil to understand clearly.when N pole move left ,line of force through increases.ring has induced current to minimise this change i.e, induced current in the loop is Anti-clockwise.similar situation occur in this problem where no. of rings is moved.