AP® Physics 1 & 2

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Current in Ammeter: Parallel Circuit

APPH12-E5YXTE

Created for Albert.io. Copyright 2016. All rights reserved.

The circuit above shows a single potential difference connected to five resistors of various values and two capacitors of identical value. Three ammeters, ${ A }_{ 1 }$, ${ A }_{ 2 }$ and ${ A }_{ 3 }$, are connected in series in various parts of the circuit.

If the current in ${ A }_{ 2 }$ reads 4.2 amps, and the current in ${ A }_{ 3 }$ reads 1.9 amps, what is the current in ${ A }_{ 1 }$?

A

1.9 amps

B

2.3 amps

C

6.1 amps

D

The current in ${A}_{1}$ cannot be determined without how long the circuit has been connected..