Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
Which expression correctly gives the electrical power dissipated in a resistor when only the potential difference
Δ
V
\Delta V
Δ
V
across it and its resistance
R
R
R
are known? a)
P
=
I
2
R
P = I^{2}R
P
=
I
2
R
b)
P
=
(
Δ
V
)
2
2
R
P = \dfrac{(\Delta V)^{2}}{2R}
P
=
2
R
(
Δ
V
)
2
c)
P
=
(
Δ
V
)
2
R
P = \dfrac{(\Delta V)^{2}}{R}
P
=
R
(
Δ
V
)
2
d)
P
=
Δ
V
I
P = \Delta V I
P
=
Δ
V
I
Browse the problem library