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AP® Physics 1 & 2

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Difficult

When Switch is Closed

APPH12-9G1UVY

Four identical resistors are connected to a voltage source as shown in the diagram above, with two resistors labeled simply for the sake of some answer options below. The circuit also contains a switch, labeled S in the diagram, that is initially open.

Which one of the following measurements decreases when the switch is closed?

A

Current flowing from the battery.

B

Voltage across resistor A.

C

Equivalent resistance of the circuit.

D

Current through resistor B.