In the circuit shown in the figure, the cell and the ammeter both have negligible resistance. Th...

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In the circuit shown in the figure, the cell and the ammeter both have negligible resistance. The resistors are identical. With the switch \( \mathrm{K} \) open, the ammeter reads \( 0.5 \mathrm{~A} \). What will be the ammeter reading when the switch is closed?
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