Two currents enter a junction: and

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits

Problem

Two currents enter a junction:

I_1(t)=4t\,\text{A}

and

I_2(t)=6-2t\,\text{A}

, where

t

is in seconds and

0\le t\le3

. The only current leaving the junction is

I_3(t)

. Determine an expression for

I_3(t)

in this time interval.