What will you observe in a compass needle shown in the figure when the switch is moved to ON position?

It shows deflection and then comes back to its original position

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It keeps showing deflections on both sides continuously

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It shows deflection and retains it till the current is switched OFF

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It does not show any deflection

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Solution

The correct option is C
It shows deflection and retains it till the current is switched OFF

When the switch is moved to ON position, the current flows through the circuit and hence a magnetic field is produced near it due to which the needle shows deflection and retains this deflection as long as current passes through the coil. Once the current is switched off it comes back to its original position.

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Similar questions

Question 7
Will the compass needle show deflection when the switch in the circuit shown in the figure is closed?

Will the compass needle show deflection when the switch in the circuit shown by figure is closed?

Question 7
Will the compass needle show deflection when the switch in the circuit shown in the figure is closed?

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