Electric Current
AP Physics C Electricity and Magnetism · Flashcards · Application
AP PHYSICS C ELECTRICITY AND MAGNETISM · FLASHCARDS
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Current
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QUESTION
If
ρ
=
1
Ω
⋅
m
\rho = 1 \Omega \cdot m
ρ
=
1Ω
⋅
m
,
L
=
2
m
L = 2 \, m
L
=
2
m
,
A
=
1
m
2
A = 1 \, m^2
A
=
1
m
2
, find
R
R
R
.
QUESTION
If
R
=
10
Ω
R = 10 \, \Omega
R
=
10
Ω
,
V
=
20
V
V = 20 \, V
V
=
20
V
, find the current
I
I
I
.
QUESTION
If
Q
=
10
C
Q = 10 \, C
Q
=
10
C
and
t
=
5
s
t = 5 \, s
t
=
5
s
, find the current
I
I
I
.
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ANSWER
I
=
2
A
I = 2 \, A
I
=
2
A
. Apply
I
=
Q
t
=
10
5
=
2
I = \frac{Q}{t} = \frac{10}{5} = 2
I
=
t
Q
=
5
10
=
2
A.
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