Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Which expression correctly gives the electrical power dissipated in a resistor when…
PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity
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
Related theory
Electric Power
Electric Circuits
Electrical energy and power
Current Electricity
Electricity
Electrical power and energy
Browse the problem library