What will happen if the striker of a doorbell is kept in a magnetic field in a direction perpendicular to motion of striker

Striker Hits Harder

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Striker rebounds harder

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More current is drawn

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No effect

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Solution

The correct option is D No effect
Striker is attracted to the electromagnet when circuit is complete. When external magnetic field perpendicular to motion of striker is applied no effect is produced in the functioning. The reason for above is that motion of striker is hindered mechanically in that direction.

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