# How can I find the power given only the torque?

I have a system where I am trying to find the power generated by a DC electric generator. However, I am not very familiar with generators, so I am having difficulty determining the rotational velocity. I have the equation:

torque = Power/2pi * n, where n = revolutions per second.

For convenience, let us say that the torque = 10Nm. I want to find the power, but how can I do that when I do not not how quickly the generator is spinning? Obviously I am missing something, but I'm not sure what it is. Thanks!

Edit: to be a little more specific, given power = 2pi x 1m x 10M x n, where n, I assume, is the number of revolutions per second, can I find the wattage as a real number, not just a symbol?

• You can't calculate power output without the missing information. – David White Dec 31 '18 at 21:28