Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
Which of the following relations correctly gives the electrical energy
W
W
W
consumed by an appliance of constant power
P
P
P
operating for a time
t
t
t
? a)
W
=
1
2
P
t
W = \dfrac{1}{2}\,P\,t
W
=
2
1
P
t
b)
W
=
P
t
W = P\,t
W
=
P
t
c)
W
=
2
P
t
W = 2\,P\,t
W
=
2
P
t
d)
W
=
P
t
60
W = \dfrac{P\,t}{60}
W
=
60
P
t
Browse the problem library