Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
Which of the following expressions gives the electrical power dissipated in a resistor in terms of current
I
I
I
and resistance
R
R
R
? a)
P
=
2
I
2
R
P = 2 I^{2} R
P
=
2
I
2
R
b)
P
=
I
2
R
P = I^{2} R
P
=
I
2
R
c)
P
=
1
2
I
2
R
P = \dfrac{1}{2} I^{2} R
P
=
2
1
I
2
R
d)
P
=
2
I
2
R
P = \sqrt{2}\, I^{2} R
P
=
2
I
2
R
Browse the problem library