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Magnetic Effects of Electric Current

Will the comp...

Question

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

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Solution

No, because there is no source of electric current in this circuit, i.e., there is no battery.

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

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

Q. Will the compass needle show deflection when the switch the circuit shown in figure, is closed?
Figure

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

Q. In the circuit shown in the figure, a coil is wound around a match box containing a compass needle. When the key is closed, the compass needle placed in the match box deflects. The force which causes this deflection is:

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