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Physics
Physics
Problem
Two currents enter a junction:
I
1
(
t
)
=
4
t
A
I_1(t)=4t\,\text{A}
I
1
(
t
)
=
4
t
A
and
I
2
(
t
)
=
6
−
2
t
A
I_2(t)=6-2t\,\text{A}
I
2
(
t
)
=
6
−
2
t
A
, where
t
t
t
is in seconds and
0
≤
t
≤
3
0\le t\le3
0
≤
t
≤
3
. The only current leaving the junction is
I
3
(
t
)
I_3(t)
I
3
(
t
)
. Determine an expression for
I
3
(
t
)
I_3(t)
I
3
(
t
)
in this time interval.
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