The resistors in this circuit are identical. The ammeter indicates that a curren

Question

The resistors in this circuit are identical. The ammeter indicates that a current Io is present in this circuit when the switch (sw) is open, as shown here.

(b) When the switch is closed the ammeter reading will be

-zero

-2Io

-Io I

-o/2

Please explain your answer I only have one try!

The resistors in this circuit are identical. The ammeter indicates that a current Io is present in this circuit when the switch (sw) is open, as shown here. (b) When the switch is closed the ammeter reading will be -zero -2Io -Io I -o/2

Explanation / Answer

resistances are parralel so the total resistance is 0.5R so current is E / 0.5R but when sw is open current is E/R =Io hence the current when sw is closed is E / 0.5R = Io/2 (option d)

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