In a conductor with a resistance of 15 ohms, the current strength is 0.4 A. What is the power of the electric current in it?

In a conductor with a resistance of 15 ohms, the current strength is 0.4 A. What is the power of the electric current in it? What is the work of the current in this conductor, performed in 10 minutes?

Given:
R = 15 Ohm
I = 0.4 A
t = 10 min
P =?
A =?
“SI”:
10 minutes = 600 seconds
Formulas:
P = U * I
U = I * R
A = U * I * t
Decision:
U = 0.4A * 15 Ohm = 6V
P = 6V * 0.4A = 2.4W
A = 6V * 0.4A * 600 sec = 1440 J