Electric Power
AP Physics 2 · Flashcards
AP PHYSICS 2 · FLASHCARDS
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QUESTION
Identify the formula for power loss in terms of voltage drop and current.
QUESTION
Calculate the power if
V
=
12
V
V = 12 \, V
V
=
12
V
and
I
=
0.5
A
I = 0.5 \, A
I
=
0.5
A
.
QUESTION
How is power related to current and voltage in an AC circuit?
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ANSWER
P
=
V
I
cos
ϕ
P = VI \cos \phi
P
=
V
I
cos
ϕ
. AC power includes the phase angle factor.
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