Rate at which energy is delivered

[dpeagler]

Homework Statement

A conducting rod of length l moves on two horizontal, frictionless rails. If a constant force of 2 N moves the bar at 2 m/s through a magnetic field B that is directed perpendicular to the system. What is the rate at which energy is delivered to the resistor?

Homework Equations

I'm not sure perhaps (time derivative) Energy = Power?

The Attempt at a Solution

I know how to find the power for this problem, but am not really for sure about what the rate at which energy is delivered means. I am thinking that means power, but another subpart of the question asked me what the mechanical power of the system was and I figure that those two will be the same value.

Any help is appreciated.

 

[emanuel_hr]

I'm not sure perhaps (time derivative) Energy = Power?

That's correct.